Well if you are going by Vs battles wiki feats then you should know that just a few months back NNT characters like mel and one mode Escanor were stated at continent level same as yamamoto.
Now they have stated the characters of taizai at small country level LOL
So vs battles wiki is inconsistent to believe at.
Also going by feats Ive seen bleach characters doing city level destruction and island level then why are they put at continent level.
Not just vs wiki
There are concrete evidences
Soul society was as big as our planet and Yammamoto was gonna burn the whole society with his Bankai.
Add to that Yawach was gonna destroy whole world.
The entire three worlds were at stake.. The hueco Mundo, soul society and the real world.
Even zaraki destroyed a country level meteor with nozarashi
Ichigo was shaking the whole Soul society.
Yeah Bleach characters are far above NNT ones.Not a single character in NNT till now could effect whole Brittania leave alone the planet.