@deaditegonzo: Pre-52 Superman was also smacked around by giant robots, his power levels are inconsistent just like every other character. It's ridiculous to think that he should be tanking supernovas all the time, he lives on earth. Plus his powers where heightened after Infinite crisis this versions seems more consistent to the one written in the eighties.
I'd argue that his powers were first nerfed, then later heightened again. But I sorta agree.