Beaten by Batman because he's above the fray and refused to fight him seriously.
Dead because he sacrificed himself for the good mankind.
Batman looks like a jerk and is alive because he's useless in the end fight and has to get saved by Wonder Woman.
Again...it's like selective hearing.
And I've not seen one reaction saying Superman gets shafted. It's only people who haven't seen the movie rampaging about this and not being sensible.
You should have seen the Batman boards back when "TDK" and "TDKR" came out. From what I remember, things would get out of hand there every now and then for the smallest of things.
But my point being; I actually understand and agree with you to an extent.
I believe fans of both Superman and Batman can possess some of the most radical of passionate fans out there where their emotions can cloud their judgment. Heck, I'm one of them and which is why I went on a venting spree awhile back.
But after having some time to cool off and think things through, it's definitely easier to process things.
Nevertheless, I just think a lot of superman fans feel insecure when their character is portrayed next to the Dark Knight because there's a concern (whether justified or not is another thing) that Batman will be made to look good at Superman's expense.
And you're right, Superman does do A LOT of things in this film. Heroic things; no doubt about it. If anything though, I think it's just misplaced expectations that's to blame for some of the knee-jerk reactions. A lot of people were hoping/expecting that Snyder would really do more of an "even fight" between Superman and batman and I don't think people really wanted to believe that Superman would "die" at the end of the film.