Suspenion of Disbelief and You

I think the first time I snorted at BS within a game was when I was playing Secret of Mana, and I found a fur bikini that was several points of defense more effective than the full-bodied armor my female character was wearing. I remember thinking, 'if I sent her into battle naked, would she be invincible?'
I'm also surprised nobody's mentioned how an eagle's claw is three times as damaging to a ninja as a bullet to the face at point-blank range.

Personally though, I think unrealism makes a game better by and large. Case in point: I tried playing a Law & Order game for PC and having a miserable time of it; you really have to be able to do investigations and legal battles well in the first place to have a chance, and you get regularly berated for doing poorly. By contrast, Phoenix Wright doesn't resemble court proceedings anywhere on Earth by even a little bit, but it's about 300% more fun. With a videogame, something that requires active input to enjoy, that's really all that matters.

Jam it back in, in the dark.