no dude this discussion was already done 3 month ago and we came to the conclusion to buff the moving accuracy of panther from 0.5 to 0.65 and yes there were video of panther beating comet in AI when there's no cover but when there's even yellow cover ( let's not talk about green cover) when panther killed second model the comet already wiped the squad ( because of over-shots and how cover works 160: 2 = 80 , mg damage don't do area damage x shoot and is like 4-6 damage in green cover )
the game is not a vacuum, the vid shows what happens to inf in the open. Of course behind green cover with the panther sitting there things will be different but lets be honest this will never happen.
Lategame you will catch a rifle squad sidecapping a VP, Panther (like the comet) does a pretty good job at killing these squads with the MG's similar to the comet.
no buffs needed, it's already cheaper with better vet.