Eh. I dunno. I think comic fans are getting really cynical and overly critical of things (shocking, I know).. the reaction to the trailer has been overly positive from people I know who've seen it.
The knock against it that you wouldn't even know it was a Superman movie until the last shot of the teaser is lame - a lot of trailers these days operate that way. It's a teaser
trailer. Also, the shots of little kid Clark in a shirt and jeans and a makeshift red cape doing the Superman pose in Smallville, and the voiceover make it pretty clear.
The reaction from the longer footage shown at SDCC, which showed more action-y stuff, was also mainly positive.
The movie may suck, and if it does, I'll gladly bash it because I have no attachment to Superman at all -- hate the comics usually (Red Son, ASS, Whatever Happened... etc, are exceptions) and hated Superman Returns -- but a minute long TEASER trailer is far from enough for me to pass judgment on the whole thing already.
The "I'm not going to watch this movie based on this" comments are kind of weird. You guys rush to judgment so quickly on these things - remember X-Men First Class?