DC is in a sort of revolution in their characters. New 52 (which I've not read, but that's a reboot, as I understand it) and now, with the success of Batman Begins and changing quite a bit of how to tell the story of Batman, I suspect the 'as real as possible' method is where DC/Warner is going to take this stuff. The Nolanverse Batman is still somewhat fantastic in nature, but the underpinnings for the suit and the tech is still based in 'what is, for the most part, possible today? How could this really possibly happen if it were to be an actual thing?'
'Course, they got a little bit away from that to get the last movie in, with the nuke power thing, and the Bat. Not saying it couldn't happen, but...
I like the new direction, myself. I have some issues with some things in Man of Steel that show much more vulnerability of Kal that could be exploited (atmospherics can change his abilities?! Snap his neck and he's done? Jonathan didn't have to die that way. Or at all, to be honest!) but overall, the 'more like real life' direction appeals to me. Kal El, put simply, could never have a perfect 'never kill' ratio in real life on this Earth. And honestly, neither could Batman.
So their being more human... or more correctly, more 'real'... is a good thing, for me. Just wish some of the story wasn't so suck sometimes, but eh... it's a comic book movie. Gotta just let some of it go and enjoy the thing as much as possible, right?