Masked_Felix

I believe that the Mouth Blast would do more environmental damage and physical destruction, but with the right moves, it can be tanked. Rasenshuriken destroys human targets at the molecular level, making it nigh-impossible to effectively tank.
For widespread damage, the Mouth Blast is superior. For a smaller, living target, the Rasenshuriken deals more indefensible damage to the body, and thus it is superior.

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