I don't underestimate your ability, and I certainly don't overestimate ours (actually, I'm currently wondering what plan B might be).
You're dealing with a undereducated population, a messed up environment, a highly dependent economy, and a bureaucracy unfit for everything. May I add that you've got, if you don't use it to plunder something big quickly, the burden of a huge and rather inefficient army, and a government run by inimical privates interests. You also have a big prison system and a ghettoized black population.
Europe got problem to but If I had to rate the big powers now I'd say 1) India/China. Lot of strengths: control of a lot of strategic resources good economy. The main downside of India is its bureaucracy while the problem with China is it's unity.
2) Russia : they kind of reached the bottom, and are used to living in a dictatorship, if Putin can launch the USSR again, Russia will be the last place where I would want to live, but may rise to superpower again, especially if they work closely with china.
3)Europe : Problem are unity,that the government is a mess, and that private interest are creeping to get into power. The strength here is the population, hard working and well educated, you could still get good high quality (thus hight value) industry, and the research is cheap.
If we manage to get a government for the Eurozone, we may eventually get better.
4) US : pauperized population, half the peoples are low revenue, highest percentage of population in prison, corrupted police force, terrible bureaucracy and government, highly religious population, creeping fundamentalism, rampant debt problem, research fed by foreign scientists, messed up environment and drug/criminality problems. Yeah sure, sheltered location, natural resources, huge army... but that really doesn't compare.
Btw : US arose to the rank of superpower because everyone else conveniently auto destructed in WW1 and WW2, and that it was the only power left. They took a huge political, cultural and military influence because of it, but it's all. Even their space program was mostly run by German scientists.