Iruka > 8 tails

[Cael]

the kunai is way larger than the one iruka have in his back.

second

the way the kunai is thrown
the kunai in iruka back is more of an stab

the kunai trown at the 8tails is a slice.

 

[Kirokill]

Octopuses are soft(no pun intended) so it's logical.
But good thing pointing that out, lmao!

 

[Pestilence]

lol.
this slayed me.
+rep

 

[warlee]

the tentacles are softer that iruka's back :|

nope, it's the different in size and obito powered it with kamui.

 

[Mr Hiru]

Dude... you're right! X'DDDDD