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

If you look at technical efficiency and strength of troops/general/etc. It would probably be Germany at the beginning of the war. We were no where near ready at the beginning of WWII. However, there are a few thing to take into account. Our population was far greater. The probability of attack on the US Mainland was highly unlikely. Maybe a random Sub, but no one was invading us at that time. So We may have lost some initial battles, but our infrastructure would be intact and we had the natural resources to eventually starve Germany out. We could have done the same to any nation, that is why it was such a horrible plan for Japan to attack us. The only thing that would have worked was if Hitler had been able to develop his weapons program before we did.