The problem is with that logic Soviets are not the only faction vs Ost to be balanced with
Actually if anything T2 skip mostly effects UKF because one Shrek squad can hardcounter WASP or AEC. Also with current meta of bolster and Tommy upgrades Ostwind has a field day munching British infantry before Cromwell arrives.
Ostwind needs a little nerf in the AT department as it's a bit too good vs Stuart or AEC. Puma hardcounters centaur in comparison due to extra range and self spotting with the less mobile cent
1) How AT squad is affecting bolster meta? Shrek-graded pgren squad have less chance to win against tommie squad in any realistic scenario.
2) AEC has excellent timing of arrival, literally near 222s, and completely annihilates it. Having shreks mean survival of 222 and glameHT but doesnt mean, that they can be used agressively, because UKF also has PIAT sappers, which can easily force back OST lights. If ostheer player skips t2, he hasn't got fielded lights. Why do you need AEC then, you can save for crom or cent. I can even say that AEC's building is a missplay in case of ostheers tech skipping.
3) Ostwind is a unit which has the same purpose that centaur, but it doesnt mean that they should be the same, it is against a game design itself. And, for G-d's sake, please, compare ostheer units to UKF, not OKW. Puma is OKW's tech tree unit, not ostheers. But, back to our belover AA-tanks:
As my personal game experience I see 2 types of counter against centaur or Ostwind: getting a medium/td to hunt it solo (more risky way, but if it succeeds, then I have total profit in resources) or getting a multiple AT without fuel investment (more like safeplay and blah blah blah, hope you understand what I mean). If you lose your cent or ostwind to a light, it is a big missplay of yours whatever faction you pick in this case, but both, AEC and puma, should have an
opportunity to hunt this tank down, since their purpose is AT-duty. Su-76 loses 1v1 fight to PIV in a lots of scenarios (while it still have possibility to finish it down after eaten satchel or few ZIS-3 shots, for example), but it doesn't mean, that PIV requires nerf on it's AT effectivness. Same appeals to ostwind. There was a thread about Ostwind against allied mediums, and there is proved already, that ostwind is not usually winning 1v1 fights against those. Sry for this wall of text, that's all my bad english. Anyways, point is, that both stuart and AEC have a little window of opportunity against ostwind and they do not require more.