We can observe this in the battle statistics. In GRB, aircraft incorrectly use their ARB Battle Rating for in-game calculations, including score, earned spawn points, and rewards. Currently, all aircraft whose GRB and ARB BRs differ are affected by this bug, and it is not limited to top-tier battles. Since rewards are also tied to the reward multiplier, for clarity, below we will only look at the score earned from kills, which depends only on your BR and the enemy’s BR.
If your BR is lower than or equal to the enemy’s, the score of destroy enemy targets is 200. If your BR is 0.3&0.4 higher than the enemy’s, you receive 197 score; 0.6&0.7 higher, 189; 1.0 higher, 175; 1.3&1.4 higher, 155; 1.6&1.7 higher, 130; 2.0 higher, 99; 2.3&2.4 higher, 63; 2.6&2.7 higher, 21; and 3.0 or more higher, 20.
The following is some data I collected from my battles over the past few days.
Yak-9UT(ARB: 5.7, GRB: 6.7)——Ostwind(RB: 3.3)——63
Yak-9UT(ARB: 5.7, GRB: 6.7)——M18 GMC(RB: 6.0)——200
Yak-9UT(ARB: 5.7, GRB: 6.7)——G6(RB: 6.3)——200
Yak-9UT(ARB: 5.7, GRB: 6.7)——T34(RB: 6.7)——200
Yak-9UT(ARB: 5.7, GRB: 6.7)——Tiger II(RB: 6.7)——200
H-5(ARB: 8.0, GRB: 7.0)——Bosvark(RB: 5.3)——21
H-5(ARB: 8.0, GRB: 7.0)——Bkan 1C(RB: 6.7)——155
Me 262 A-1a/U1(ARB&GRB: 7.3)——BTR-ZD(RB: 6.3)——175
Ar 234 C-3(ARB&GRB: 7.3)——M53/59(RB: 6.3)——175
Ar 234 C-3(ARB&GRB: 7.3)——AMX M4(RB: 7.0)——197
JH-7(ARB: 11.7, GRB: 10.3)——T-72M1(RB: 9.3)——63
JH-7(ARB: 11.7, GRB: 10.3)——Osa-AK(RB: 10.3)——155
JH-7(ARB: 11.7, GRB: 10.3)——Leopard 2A4(RB: 10.7)——175
JH-7A2(ARB: 13.0, GRB: 12.3)——2S38(RB: 10.7)——63
JH-7A2(ARB: 13.0, GRB: 12.3)——Type 81 (C)(RB: 11.7)——155
JH-7A2(ARB: 13.0, GRB: 12.3)——ADATS(RB: 11.7)——155
JH-7A2(ARB: 13.0, GRB: 12.3)——BM Oplot-T(RB: 12.3)——189
JH-7A2(ARB: 13.0, GRB: 12.3)——9K317M “BUK-M3” (TADS)(RB: 12.7)——197
J-11B(ARB: 13.7, GRB: 12.7)——Pantsir-S1(RB: 12.0)——130
J-11B(ARB: 13.7, GRB: 12.7)——Pantsir SM-SV(RB: 12.7)——175
J-10C(ARB: 14.3, GRB: 13.0)——OTOMATIC(RB: 11.3)——20
J-10C(ARB: 14.3, GRB: 13.0)——T-80U(RB: 11.7)——21
J-10C(ARB: 14.3, GRB: 13.0)——Pantsir-S1(RB: 12.0)——63
J-10C(ARB: 14.3, GRB: 13.0)——Leopard 2A7HU(RB: 12.7)——130
J-16(ARB: 14.7, GRB: 13.0)——ADATS(RB: 11.7)——20
J-16(ARB: 14.7, GRB: 13.0)——Pantsir-S1(RB: 12.0)——21
From the above data, it can be seen that for aircraft whose ARB and GRB BRs are the same, such as the Me 262 A-1a/U1 and Ar 234 C-3, the score calculation is correct: when your BR is 0.3 higher than the enemy’s, a kill grants 197 score; when it is 1.0 higher, a kill grants 175 score.
However, for other aircraft whose ARB and GRB BRs differ, if we look at the scoring based on their GRB BR, it is completely messed up:
Yak-9UT(GRB: 6.7)——Ostwind(RB: 3.3)——63——BR higher by 3.4
J-10C(GRB: 13.0)——OTOMATIC(RB: 11.3)——20——BR higher by 1.7
H-5(GRB: 7.0)——Bosvark(RB: 5.3)——21——BR higher by 1.7
JH-7A2(GRB: 12.3)——2S38(RB: 10.7)——63——BR higher by 1.6
J-16(GRB: 13.0)——ADATS(RB: 11.7)——20——BR higher by 1.3
J-10C(GRB: 13.0)——T-80U(RB: 11.7)——21——BR higher by 1.3
J-16(GRB: 13.0)——Pantsir-S1(RB: 12.0)——21——BR higher by 1.0
JH-7(GRB: 10.3)——T-72M1(RB: 9.3)——63——BR higher by 1.0
J-10C(GRB: 13.0)——Pantsir-S1(RB: 12.0)——63——BR higher by 1.0
J-11B(GRB: 12.7)——Pantsir-S1(RB: 12.0)——130——BR higher by 0.7
Yak-9UT(GRB: 6.7)——M18 GMC(RB: 6.0)——200——BR higher by 0.7
JH-7A2(GRB: 12.3)——Type 81 (C)(RB: 11.7)——155——BR higher by 0.6
JH-7A2(GRB: 12.3)——ADATS(RB: 11.7)——155——BR higher by 0.6
Yak-9UT(GRB: 6.7)——G6(RB: 6.3)——200——BR higher by 0.4
J-10C(GRB: 13.0)——Leopard 2A7HU(RB: 12.7)——130——BR higher by 0.3
H-5(GRB: 7.0)——Bkan 1C(RB: 6.7)——155——BR higher by 0.3
JH-7(GRB: 10.3)——Osa-AK(RB: 10.3)——155——BR same
J-11B(GRB: 12.7)——Pantsir SM-SV(RB: 12.7)——175——BR same
JH-7A2(GRB: 12.3)——BM Oplot-T(RB: 12.3)——189——BR same
Yak-9UT(GRB: 6.7)——T34(RB: 6.7)——200——BR same
Yak-9UT(GRB: 6.7)——Tiger II(RB: 6.7)——200——BR same
JH-7(GRB: 10.3)——Leopard 2A4(RB: 10.7)——175——BR lower
JH-7A2(GRB: 12.3)——9K317M “BUK-M3” (TADS)(RB: 12.7)——197——BR lower
Obviously, there is no pattern between score and BR difference—you can even get less than 200 score when killing an enemy whose BR is higher than yours.
Only when calculated using ARB does the score conform to the game’s mechanics:
J-16(ARB: 14.7)——ADATS(RB: 11.7)——20——BR higher by 3.0
J-10C(ARB: 14.3)——OTOMATIC(RB: 11.3)——20——BR higher by 3.0
J-16(ARB: 14.7)——Pantsir-S1(RB: 12.0)——21——BR higher by 2.7
H-5(ARB: 8.0)——Bosvark(RB: 5.3)——21——BR higher by 2.7
J-10C(ARB: 14.3)——T-80U(RB: 11.7)——21——BR higher by 2.6
JH-7(ARB: 11.7)——T-72M1(RB: 9.3)——63——BR higher by 2.4
Yak-9UT(ARB: 5.7)——Ostwind(RB: 3.3)——63——BR higher by 2.4
JH-7A2(ARB: 13.0)——2S38(RB: 10.7)——63——BR higher by 2.3
J-10C(ARB: 14.3)——Pantsir-S1(RB: 12.0)——63——BR higher by 2.3
J-11B(ARB: 13.7)——Pantsir-S1(RB: 12.0)——130——BR higher by 1.7
J-10C(ARB: 14.3)——Leopard 2A7HU(RB: 12.7)——130——BR higher by 1.6
JH-7(ARB: 11.7)——Osa-AK(RB: 10.3)——155——BR higher by 1.4
H-5(ARB: 8.0)——Bkan 1C(RB: 6.7)——155——BR higher by 1.3
JH-7A2(ARB: 13.0)——Type 81 (C)(RB: 11.7)——155——BR higher by 1.3
JH-7A2(ARB: 13.0)——ADATS(RB: 11.7)——155——BR higher by 1.3
JH-7(ARB: 11.7)——Leopard 2A4(RB: 10.7)——175——BR higher by 1.0
J-11B(ARB: 13.7)——Pantsir SM-SV(RB: 12.7)——175——BR higher by 1.0
JH-7A2(ARB: 13.0)——BM Oplot-T(RB: 12.3)——189——BR higher by 0.7
JH-7A2(ARB: 13.0)——9K317M “BUK-M3” (TADS)(RB: 12.7)——197——BR higher by 0.3
Yak-9UT(ARB: 5.7)——M18 GMC(RB: 6.0)——200——BR lower
Yak-9UT(ARB: 5.7)——G6(RB: 6.3)——200——BR lower
Yak-9UT(ARB: 5.7)——T34(RB: 6.7)——200——BR lower
Yak-9UT(ARB: 5.7)——Tiger II(RB: 6.7)——200——BR lower
In addition, this thing also affects kills against enemy aircraft. In one of my battles today, my Z-10ME(RB: 13.0) destroyed an EF-2000(AESA)(ARB: 14.7, GRB: 13.0) and received the “Rank Does Not Matter” award. If the GRB BR were used for the calculation, the Z-10ME and the EF-2000(AESA) have the same BR, this award should not have been granted. However, because the ARB BR is used, the BR difference is 1.7, so the award can be granted.
This problem hits top-tier CAS the hardest. Top-tier jets have a 14.7 ARB BR, but the highest tank BR is only 12.7. So no matter what you kill, you’re already at least 2.0 higher in BR, which means the most kill score you can get is 99. And if you kill something like a Pantsir-S1 at 12.0, you only get 21…
Meanwhile, for planes like the Yak-9 whose GRB BR is higher than its ARB BR, this is actually a massive advantage. As the top-tier vehicle in the match, your Yak-9UT gets no penalty at all for killing 5.7–6.7 enemies. You can even be a full 2.0 BR above a 4.7 and still get 175 score, which is the value for only a 1.0 BR gap.
One match 2 days ago I got 5 kills in M1A2T and 8 in J16—13 kills total—and only got 1810 score. Earlier this year, also at top tier, I got 3 kills in M1A2T and 10 in J10C—also 13 kills—and got 3333 score.