That they are generally not very realistic? Yeah, totally.
When I watch a sci-fi fantasy movie I usually don't expect realistic and down to earth fight scenes. So I'm okay with that. That's why it doesn't bother me in the slightest that the lean girl takes out all the tough looking guys all on her own. If it looks cool I'm all for it!
But him just standing there, doing nothing at all?
... I'm not saying it doesn't happen in other movies. Of course you see it quite often: the bad guys lining up to get beat up by the hero one after the other instead of them all just overpowering them all at once. That's a common trope.
But here it just feels so unnecessary to me 'cause it's actually a real easy fix. Just make him show up late to save his guys for example. That way it wouldn't look so implausible.
But like I said, maybe it's just me. It's like a tiny little spot on the ceiling right above your bed. For a long time you didn't even notice it at all... But now that you did you just can't take your eyes off it again and it bothers the hell out of you...