The main tank of the U.S at the end of the war was the upgunned M4E8. The Russians were still using a hodgepodge of T-34s. Both countries had heavy tanks in small numbers. The Russians had the Josef Stalin 3 (IS3), the U.S. had the M-26.
The U.S. had a better airforce hands down. Air superiority would have gone to the U.S. All targets within reach of B-29s based in Germany would have been bombed.
Numbers wise, the Russians had alot more troops than the U.S. Both sides had experienced troops. Now heres where a big variable comes in. Many German soldiers would have fought against the Russians with the U.S. *If* the U.S. adopted German squad tactics (which they did in Vietnam), this would offset the numerical advantage the Russians had. Heck, at the end of the war, the Germans were using MG34s and STG44s in squads. It would take the U.S. over 20 years to match that firepower.
Naval battles would go for the U.S. Did the USSR even have aircraft carriers?