What's with the bad (at least not as good) Mario Kart Wii reviews?

[kn]

I played GP for about 20 minutes last night after picking it up at a midnight launch. That's certainly not enough time to provide a fully informed opinion, but I can see right away where the complaints are coming from in regards to the weapons piling on the first place player on the third lap. They do gang up and will cause you to lose a rather significant lead... At times they come more than one at a time. My worst was Ink, Blue Turtle, and Pow pretty much all at the same time. I didn't lose the race as I was playing on 50CC and was waaaaaaay ahead, but I can see where that would irritate some folks. That said, this is a combat Kart game. If people don't want combat in their kart, get another game. It's not that big of a deal and you just know it's coming.

So far the graphics appear to be a fairly decent improvement over DD so that is good. Framerate is smooth and there are a lot more little things going on throughout each track.

All I can say is two thumbs up at the moment until I've play enough to form a solid opinion.