supes went and came back, he already existed in returns and the public's atitude and his own atitude to his return was apparent in routh's performance in trying to re-establish his role in a world which had learn to live without him after being so reliant on him.
Now see, I thought that SR was missing that completely. After seeing the trailers, I got the idea that Superman was supposed to be dealing how people didn't accept him (or something of that nature) after he returned, but while watching the movie, I literally thought, "WTF?!" when he rescued everyone on the plane in the middle of a sold-out baseball game less than halfway through. Then it turned into, "Lex hates Superman cause he's Lex, and Lois loves/hates Superman cause she's bitter." The so-called epic conflict within Supes became laughable for me.
The two aren't comparable. They're both DC icons, but Batman is a man in a costume fighting crime. Superman is an alien with superhuman powers who fights against global threats as much as the typical crime. You need less for a good Batman movie than you do for a good Superman movie.
I wouldn't say "less," but it's admittedly easier to make an intelligent Batman movie than an intelligent Superman movie. Batman's got his obsession, his tormented psyche, the vigilante angle, his violence, his lack of superpowers that make him physically vulnerable, etc.
With Superman, it's impossible to make a convincing physical conflict without involving kryptonite, because he's got all these superpowers. And he's supposed to be this bright beacon of hope that's all-good, so that nixes all of the dark stuff that makes Batman really interesting in the psychological sense, as well as the ambiguous relationship he has with the police and the public. Superman is not a vigilante, and he doesn't hurt people - everyone loooves Superman. So what kind of conflict can he have?
The best thing I can think of (although I am no writer), is him getting frustrated that people aren't heeding his example of goodness.
ETA: I normally wouldn't be so frustrated by a movie like I am for SR. The film really had some good moments, but they were lost in this giant mess of a plot that just wasn't convincing and didn't make sense even within the world of the movie. And it's always more frustrating when something with potential fails badly than when something that was supposed to be bad anyway fails badly.