T80U is basicly shoud be better becuse is basicly made to kill M1 tanks, it have Stabilization,Thermal View and same crap as M1 tanks, T80U even have faster fire rate more speed and mobility, but it lacks in arrmor, but fire power is same as M1... anyways both tanks woud be probably dead after one hit
And is so funny you even compare Russian T72 wich were not even close to real T72, Battle of 73 Easting hade Lion of Babylon tanks copys of T72 they only hade T72 tracks, arrmor and other crap was made by iraq, No training crew did alot impact to battle, But even real T72 i think woud have problems agenst M1, its like comparying HONDA vs FERRARI
But T80U is not even close to T72