Hmmm... Have you played the demo? I think a lot of your criticisms are fair, but "takes itself too seriously" doesn't seem like the demo I played today. A lot of it felt very toungue in cheek.
I just googled the Overstrike trailer and yeah... The tone and highly stylized graphics do seem to be more fun than FUSE will probably deliver. With that said, I get the feeling that FUSE will be a very good game that will fail to sell well because it really can't differentiate itself from the cookie cutter shooters out today.