I'm fairly sure stun isn't a chance thing, you just get stunned if you reach some suppression amount (300?) in a short amount of time. And I've never seen a vehicle get a crit from firing, those happen when you get fired on. The nerf could be in fire rate or dispersion or crit chance etc.
fair enough, I'm not too sure about how suppression works 'under the hood', and I imagine feeding/fire crits would be frustrating and probably a bad idea upon reflection.
Nonetheless they're absurdly powerful, and with the Merkava transport available in HATO Mixed, massively tip the utility of the infantry version in the favour of BLUFOR, which is, as an unbiased Yugoslav diaspora-kun, clearly, un, acceptable,,,
(I really can't wait for some OP Yugostuff)