It's not bleach it's ichigo. And the size of the sword doesn't matter. If all of the spirit energy in a captains zombakto were to be released their swords would be bigger than the planet earth. And besides ichigo would win because he has a sword, bonkai, and plus he can do the attacks that naruto can. He has better speed, more power, and overall better attacks. It's as simple as that.
2)naruto has kyuubi kyuubi can heal naruto and 10x his speed and 50x power
3)naruto with one attack the rasen shuriken it kills the atoms of the human body meaning their dead even if it touches a mere finger cuz if it hits even a portion of the body it spreads and kills the being