This is exactly what is wrong with the Ostwind. It's only good against blobs (AoE tank) which USF uses most often. But as little as 2 zooks can scare off the ostwind. Too often do u see the USF blob player react to an ostwind by rushing the ostwind with zooks. Try that with shreck pgrens against a centaur. Result: dead pgrens. Whereas the rifles might just get a bit wounded and many times wouldn't lose a single man when the squad closes the distance between itself and the ostwind. The accuracy of the Ostwind is beyond bad compared to the centaur when its stationary and a nasty accuracy penalty on the move, paper armor and a 5 second reload time. The ostwind can be mediocre at times but the low accuracy makes it so unreliable and inconsistent. Any small buff will do for the ostwind: slight increase to accuracy on the move, reduced accuracy from handheld anti-tank, reduced reload time, a little suppression, anything really. The Ostwind is mediocre at best, completely useless at worst.
I don't think it's right at the moment, but it's not
useless. Like so much of Wehrmacht, it needs combined arms. Pair it with an HMG42, and Zooks are helpless against it - much like how an Ostwind will kill infantry blobs that are killing HMG42s even while suppressed.
It needs it a bit too much, though, for sure. The unit could use one more thing to make it more independent, or perhaps a cheaper price to justify it being likely heavily dependent on synergistic support to perform its own role (while StuG Gs just need basically any unit to be in bit in front of it to make full use of its 50 range).