Why did the developers revert the different battle ratings depending on ground and air performance to the previous setting?

Why some aircraft that were 9.0 in the past due to their strong CAS despite their rather weak air to air performance then made split BRs now back to their highest BR?

Proof

Alpha Jet was 9.0 both air and ground before the change, then 8.7 for air, 9.0 for ground, then 9.0 for air and ground again.

A4E was 8.3 for air, 8.7 for ground, now it’s 8.7 only.

Need more examples?

Nearly all if not all aircraft were increased in BR because of air battles performance, not ground performance.

@Boeing747Cultist
Alpha Jet is one of the better 9.0s in the game for air RB.
A-4E is 9.3 in ground, not 8.7.

Uhhh, this has not even been the case every since they introduced separate BRs for aircraft in Ground Battles

Exactly as he said it

Since the last BR changes in Feb I was quite a fan of the F-100D being 9.0 in GRB as another example

that makes sense.