Aquaman vs. IW Iron Man

Melee Only (No ranged weapons for Tony/Tony can use his nanotech to make bludgeon/blade weapons)

Arthur has his trident

Bane dies.

If Tony equips that combat AI he did against Cap, then I can see him winning. Otherwise, I don't think he's a skilled enough melee fighter to keep trading with Arthur. He'll last for a bit but his suit will eventually get damaged beyond repair.