I'm not as sold on Zimmer's music for Superman as I was on his Batman music. He's a little too... formal (maybe even pompous) to do what I think needs to be done for Superman. That's not to say that John Williams hasn't written his fair share of pompous music, but if there's been a populist composer of music in America in the last 35 or 40 years, wouldn't John Williams be the guy to win that title? He's written so many iconic themes, instantly recognizable to so many people...
This is about Zimmer. Sorry. Got off track. The Man of Steel score is far better than the movie it's attached to; it actually projects a range of emotions that reach beyond intensely dour and dourly intense. His growing emphasis on percussion doesn't do it for me, though, as I'm a big fan of melody and theme in my soundtrack music, and that's here, but just not as present as would've been ideal.
Some of it's impressively evocative, though, and would feel like Superman even if it weren't attached to a Superman movie (especially the closing piece).