Not as bad as they say...
To start of its Godzilla. I'm not the biggest Godzilla fan, but he does kick ass, and is iconic through-out the world, and in this game you get to control him and beat up other monsters and wreck cities. So its got some fun gameplay, there is no denying that!
The controls are a little awkward but once you get used to them there should be no problem. The 'career' mode should not take you long to complete, but its a decent length an should keep you entertained for a while. There's also a Brawl mode which lets you fight just about any other monster right away.
Graphically and sound wise things are just fine. Nothing great, nothing really bad to say either.
Overall I think fans will like this game, but to the average gamer, its still an all right game, so ignore the bad reviews and give it a try.