the centaur should be better, it's more expensive than the ostwind.
yes, 40 mp matter. Either buff the centaur's speed or lower the cost of the centaur.
A fast moving tank which has powfull AI capability and medium tank armor(160/80)? No... You know the pens of Pz4 maingun right? It's 100/110/120. And the target size of the Centaur is 18, as same as the M3 scout car/222 scout car. Giving it fast speed will make it much harder to hit. That will make this unit totally overperforming.