Naruto because he has meer brand power and meer durability. Not only can he easily destroy mountains in the manga now but he can casually deflect mountain destroying blasts as well.
It's hard to compare Naruto with Bleach fully because nothing about the two anime is the same in any way..I feel it would be close but in the end I think Ichigo-kun would win.
Ichigo will kick Naruto's but. With his hollow for, flash step,bankai and getsuga tebshue that lil thing won't stand a chance... He beat ulqiorra, who's 10 times stronger than Naruto