He's acting like a bad-ass is what he's doing.
Action-wise it's cool. But his dialogue seems like it's straight out of the 60's Batman TV series - and not from any of the good parts, either.
Something like "Sure, officer I'll put him down...just as soon as he makes a full confession. To someone who still believes the law works the same for rich and poor alike. Because that ain't Superman." sounded really clunky and forced. It came off as being a little more pretentious than earnest, which Supes really needs to sound a little more like.
Now, maybe that was a little intentional, with Supes supposedly acting more detached and alien, but it just came off sounding fake.