BM Naruto bombs
It's Naruto, in all honesty. Younger Toguro is tough and all but he can't compete with Luffy as he is now. He lost to Yusuke in the Dark Tournament and Youske back then was nowhere near Naruto at this moment. Toguro is town level at best while Naruto, with all these latest power-ups is small country level, at the least. He completely speed blitzes him in just about every way, seeing as he blitzes Raikage who was nearly as fast as Minato. With his bijuudama, Naruto takes out Toguro with low difficulty. Mid difficulty at best.