@bigz007: Ofcourse. He also has Yama's bankai with him remember.
But I wonder what will happen to Uryu. If Juha dies, will he also die along with him?
Naruto: No one. Madara can beat him if you count his perfect Susanoo as a sword.
Bleach: Dangai Ichigo and Monster Aizen as of now. We need to wait for more feats from YHWH, Haschwald, Current Ichigo etc.
DB/DBZ: Future Trunks and anyone stronger than him :D
YYH: Hiei (S class)
@Dream: Oh, fine.
Actually there is a way because Piccolo's casual unnamed ki blast at the beginning of Z was moon level. So end of DB Goku's strongest attack being moon level isn't really a stretch, because he didn't train much after the tournament.