They can’t beat down Stark without Stark holding back.
there were multiple times where Tony could’ve murdered Cap and you see him decide not to
the only way you see Steve and Bucky damage hin was with the sheild that can Block Thor, and the metal arm.
Ironman with electricity does very well. Him getting struck by Thor made him stronger
but the first suit always seemed to me much better in durability than every other suit sans Infinity War and Endgame. The worst offender is Ironman 3 imo
Like I understand what you are saying but it still feels off to me. Like Vibranium is bullshit, news at 11 but how hard was Tony holding back then? Especially when he wanted to take Bucky in due to knowing he killed his parents explicitly?