Something I thought of immediately upon seeing it during Aquaman:
Arthur taking a point blank M203 grenade round to the chest, just like T'Challa did in BP. So, there's an apples-to-apples durability comparison.
Aquaman's stats are well above anyone here, especially considering his durability (getting hit - again, point blank - by Manta's laser eyes that blew up an island rock formation and being only burned is a very impressive feat).
If the team can work in tandem well enough to keep Arthur off balance until they wear him down, they get it. But again, Arthur's stats are up there in the big leagues.
I'm going Arthur for now.