the M1A1(and im sure many maint battletanks) in the hands of skilled crews can handle multiple tanks
ive read stories of the abrams taking on 3 t 72s point blank and taking all three on in a slugfest
and only being minorly damaged
in the game ive seen the abrams and t80 and some of the other addons tanks the the tu12 take on multiple tanks and come out the victor
which is why i like arty ;D