Okay Aga i'm hearing you out.
1) Beast are never tamed just sealed. Then you can form a bond (hachibi) but that doesnt count as tamed in my book.
2) Believing to save your friends is a true source of power for victory but that only applies to good guys. When i said power the most important thing i meant in general. ex. J-man fighting to protect the leaf didn't work, granny fighting to protect the leaf didn't work.
3) your fourth paragraph shows the importance of power
4) Yes i completely agree with you that pain is just another stepping stone for naruto, nagato is however a different matter. make no mistake all pain body will be beat one way or another by naruto.
Florx u're 98% right execpt naruto is dumb not so smart but not dumb.
half the shit he comes up with amazes j-man and kakashi, and they's suppose to be the genius of the leave