Even they are deadly in the hand of bots.
In open fields, it lost its charm against real tanks, unless it can really dodge a bullet with its nimbleness. In narrow fields, it cannot be that nimble to avoid ambush.
In your case, you are in M10, which have a very slow turret turn rate. Just never do any head-to-head fight with other vehicles with that thing. The key with M10 is never to let the enemy get close, yes, especially fast movers, Puma and Kubelschrek.