*Team all depicted gear in their assault on Cassandra Nova's lair
*NO BFR/fight to the death
*All FOX/MCU variants have all their film prior film feats
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
Blade, Deadpool, Blade(2) and Elektra probably can't hurt him much considering Arthur's bulletproof and has tanked an RPG to the chest in his first film and has only improved since then.
Gambit's energy charged attacks may not hurt him much either, if at all.
That leaves Wolverine and X-23, so if the rest act as distractions, these two could possibly land a killing blow.
Deadpool and Wolverine have shown sufficient super strength that with their speed and Adamantium blades, they could figuratively and literally gut Arthur like a fish. And as strong as he is, he can't put either of them down permanently. And while it doesn't really make sense, Laura sliced Juggernaut's feet off at the ankles, so she's decently strong as well. All three of them are too much on land.
Gambit serves as a neat distraction as he's skilled enough to score headshots with his cards and agile enough to get in close with his staff and just drop constant explosions to keep him busy while they work.
Ribs are held in place by tough pieces of cartilage, they aren't actually directly connected to the sternum or anything. And we saw enough time had passed that Logan was almost completely decomposed since he wasn't properly embalmed and left in a ditch in the dirt, so bugs, bacteria, and the constant cold/moisture ate away at most of his tissue. That's why the only thing that was left was a bit of his face, and the tendons so Deadpool could SNIKT his claws.
So him ripping off the rib wouldn't have been too hard as the cartilage would be practically nonexistent at that point. It would kinda be like popping a soda bottle from the ring. Or snapping a rotting branch off from a tree.