Naruto beat Pain, Nagato > Pain, Yet Pain could of Killed Sm naruto with Little Trouble if he wanted to, But he wanted to take him alive.Naruto would kill Nagato blindfolded bro. He has beaten Nagato with Cloak and SM. Now Imagine KM + BM that's right.
Naruto is the strongest shinobi alive.
Nagato Had Km naruto and would of Killed him if not for Itachi.
Maybe you should Re-read the Manga