Boring, Boring Violence
The first time I noticed it was The Dark Knight Returns, where we get this litany of damage Bats is suffering from as the story progresses, but I've seen it a lot recently. Where the "reality" falls down is where despite being concussed, shot, beaten up, a broken arm, had their powers stolen, shot again, dropped out of a helicopter, and had their leg bitten off by a werewolf, the hero still somehow manages to hold it together for as long as it takes to win the day.
It doesn't take long before the tension created by injuries becomes lost once you realise that it's not actually stopping them from doing anything they need to do, and they will completely recover from it anyway. Lately I've been reading The Dresden Files, and it's reaching the point where I feel like a sucker for feeling any kind of concern for the latest injury Harry is dealt, because, honestly, if the broken leg he got last chapter isn't slowing him down, I don't see how being beaten up again is going to make much of a difference.
I'm not saying that I want to see the lasting effects that such injuries cause someone to recur through the rest of the series, I'm just saying that if they are not going to have real effects then don't have them in the first place.
Is it worse to have a character seriously hurt but somehow act like they haven't been nearly as badly hurt as we've been told, or to not have them hurt that bad in the first place?
Edited to add:
I think I've solved it. It was when it occurred to me that The Dresden Files are written in the first person. It's Harry telling the story. Things never were quite as bad as he tells you; he's bigging up how hurt he is for sympathy and to show how cool he is. Harry Dresden has manflu.