Singer has committed the most terrible of crimes. Made a boring movie. He essentially nerfed Superman so he could delve into a love triangle no one asked for. He also depicted Kumar, beating up Superman on screen. Not even Green Lantern did something like that. GL was a mistake, but Superman Returns was Singer believing too much of his own hype.
There you go. You got it.
Seeing superman being beat up by a couple of thugs including that fucking Kumar guy is really...really low.