What the hell???

I've already gone on the record here on this blog and stated that Steve Rogers, dressed as the Captain here, is one of my all-time favorite characters. In the Marvel Universe, Steve was one of the elite fighters. I'd only consider Wolverine as being anywhere close to the same league as Steve, fighting-wise. With that said, what the hell was Steve thinking here??? Cap, Iron Man is wearing a suit of ARMOR! I don't think a headlock is REALLY going to do that much damage! How the hell do you plan on choking out a dude in a suit of armor? This panel wasn't exactly Steve at his fighting best...