re: At full strength who was more powerful in ww2 Germany or US?

Easy. The US. We were loaded on natural resources for war. We were located outside the war zone. Germans only hope was to subdue England before we enter the war. Had Germany water another year for the Russia campaign it would have been different. The us was an isolationist and we were way behind on our military. But, as Yamamoto stated, we were a sleeping giant with mass industry. It took WWII to finally get out of the Great Depression.

But with our industry unmolested from bombing it having resources cut off we were rebuilding way faster then were were losing. Germany couldn’t replenish losses and needed Russian Caucasus oil to continue the fight.