Strength - Iron man - this is probably the feat everyone uses but like, Iron man made thanos bleed and he was the only avenger (not including Thor) to do such a thing

Speed - Iron man - caught up to a space ship that was traveling out of the atmosphere with ease in only about 7 seconds

Durability - Iron man - tanked the bloody power stone, an infinity stone, y'know the things that can literally do anything and have destroyed multiple planets

Endurance - Iron man - Endgame, enough said.

Attack potency - Iron man - again, the whole him making Thanos bleed thing

Better character - Iron man - don't get me wrong I love homelander as a character he's one of the best villains in fiction at the moment but he hasn't really had a character arc, whereas iron man has

Winner - Iron man - Low diff