By scaling to vast lorde ichigo, who’s inferior to him, he should be around there. Not to mention surviving the force and explosion of gremmy’s meteor(this can be seen differently tho)
He didn't survive the meteor explosion, he just destroyed it before it can reach SS.
He would dodge them. Kenpachi at EOS scales to other chars, and even when almost dead from gremmy’s vacuum, he still blitzed Behring sternritter.
The whole “kenpachi is slow” meme is due to his fight with SS arc ichigo.
IC Kenpachi doesn't ever try to dodge attack as seen from his battle with nnoitra, Ichigo etc.
He would try to tank the attack or overpower it, he thinks dodging would be cowardly and he lives for battle.
Even if Kenpachi have a change of heart he still doesn't have any speed feat other than reaction, which is pretty pointless when talking about dodging BD.
Naruto’s regular TBB are Not island+, that was due to both him and Gyūki charging theirs to the max.
Gyuki did not participate in that BD, if was Naruto + 5 bijuu.
There is no reason that Naruto's other BD are weaker, especially since this is Naruto's first bijuudama and he's still inexperienced using it. Later on he can charge multiple of these at once.
VL palmed a technique with a greater fireball. I don’t see why kenpachi who’s stronger than him shouldn’t be able to survive something like this.
Lanza doesn't have a greater fireball than Naruto's BD, even account for the half the other bijuu contributed.
Not to mention lanza doesn't have vaporization bonus that Naruto's BD fireball would have, since lanza was fired on sand while the BD's fireball are shown to be vaporizing mountain ranges.