@Necronomica
HSTVL - 2S38 - Begleit - Strf 9040C [Lvkv 9040C since same mass and I can test drive that].
None crewed as that would skew results due to some having expert crews, and others not.
In seconds:
0 - 50: 7 - 14 - 14 - 17
0 - 60: 11 - 19 - 22 - 24
0 - 70: 16 - Null - Null - Null. Begleit was the closest to getting to 70kph before the grass.
0 - 80: HSTVL in 22 seconds.
HSTVL is by far the fastest. 200% faster to 50KPH, 172% faster to 60. Inconclusive to further speeds. Other tanks ran out of road.
HSTVL is the only one capable of 80kph, getting within 2kph of its top speed in the time it takes Begleit to get to 60kph.
Evidence:
Spoiler
HSTVL - 2S38 - Strf 9040C.
Munition mass: 2.27 - 0.95 - 0.53
Munition: 100 meters;
Flat: 269 - 221 - 168
60 degrees: 310 - 256 - 194.
Strf 9040C has 76% the pen of 2S38, and 2S38 has 82% the pen of HSTVL. I consider 2S38 0.3 superior to Strf 9040C due to that difference, which means purely on penetration, if HSTVL was equal in all other ways to 2S38 and Strf 9040C I’d consider it 0.3 higher than 2S38 and thus 10.7 IF it was as-fast, as large, and so forth.
2S38 APCBC vs Begleit APCBC: 2.8kg - 2.7kg.
Flat: 147 - 133
60 degrees: 80 - 74
2S38 has filler.
Obviously APCBC is inferior to APFSDS for auto-lights, so all of the others win in that regard explaining Begleit’s 9.3 BR along with its ITOWs for more impact when needed.
Optic magnification/FOV: HSTVL - 2S38 - Begleit - Strf 9040C.
2x 38* - 8x 9*; 4x 19* - 9.4x 8*; 4x 19* - 12x 6*; 8x 9*.
HSTVL has the best by a 200% improvement in FOV over 2S38 and Begleit, and Strf 9040C gets shafted by the M60 syndrome.
Turret traverse:
I don’t have exact data on this at this time, All but Strf 9040C are capable of over 40 degrees per second though. And Strf 9040C’s is ~30 degrees per second.
So Strf 9040C is the “worst” among them.
Anything else I’m missing?
Let’s find 2 tanks whose only difference is speed.
BT-7M is 0.7 BR higher than BT-7.
So 0.3 BR higher than 2S38 for HSTVL’s round.
0.7 for its drastically higher speed.
And its superior optics FOV is mixed in with those two stats for HSTVL to deserve being 1.0 BR higher than 2S38.
I say deserve since I want 2S38 to be 10.3.
Edit: Here’s protection against 30mm AFPSDS:
Spoiler
Begleit shafted, HSTVL “most” armored.