Sure - a lot of Germans were half expecting US to help them fight the Red Hordes, not so much of the British though Not a lot of US GI's were expecting to jump on Gerry's bandwagon though - Patton was an exception, not a rule. The V-Day was not exactly about what Germans wanted, though - fighting alongside x-enemy of 4+ years would also produce some interesting morale and logistical issues. I imagine, it's purely hypothetical that all of German POW's were of single ilk and mind, willing to die for the new ruler and for German freedom - after all, fleeing westward to avoid surrendering in Soviet zone of influence was a sure sign of highly operational army and continued will to fight.
Frontal armor of JS-2 provided adequate protection against Panthers and Tigers from 600m plus distance, with JS-3 increasing armor protection by a healthy margin while greatly lowering displacement of the vehicle and removing shot traps and other weaknesses of JS-2. Tigers and Panters would be pretty impotent against JS-3 - especially, with the deteriorating quality of crews.
The "superiority" of German designs is a topic in itself - the only superiority I can point to were the AT guns and those were excellent and second to none and caused majority of tank losses.
Soviets would have equal to greater edge in "the God of War" - the Artillery. While not writing off the Western Allies - SU had numerical superiority, combat experience and well honed tactics of crushing defensive belts, pouring on offensive, moving up logistics, rinsing and repeating.
Finally, the biggest caveat (pothole) of this debate is definition of "victory" - Soviet Union has a much shorter distance to push into France and re-create Dunkirk, while Allies couldn't call the victory until they chewed through millions strong RKKA and went onto... Moscow? Urals? Manchuria?