7/10 is a bit harsh, but a persons rating will really depend on their background. I think a lot of these uber fanboys like you see on N4G went from PS2 to PS3 and never had a PC or 360, so to them it's a 10/10 l33t haxx0r game. If you've had a PC or 360 then you have already had great graphics and gameplay for years, so it's far less likely to be a 10/10.
I just played through the demo. It's a good game, but to me there are better shooters out there. The graphics are nice but again there are better looking games available at least going by the demo (I don't like to judge by videos and screenshots). The hype machine is partly to blame, I was expecting a a lot but in many ways it seems like a traditional shooter. Some stuff is very predictable. The artifacting around particles, the very short clip distance on ground objects, texturing errors on the ground, etc. Same with gameplay elements. For example, he has to hack the control panel so I hide and wait for him to do it. Hmm, seems like it's taking him forever to hack it. Oh of course, I have to kill all the bad guys and then he will have magically hacked it. Sure enough that was it.
In any case, it's a good game but the hype machine has blown this way out of proportion based on the demo. Likewise, anyone comparing this visually to Crysis needs to seriously upgrade their Voodoo2 card.
After finally playing the game I was a little let down in the graphics department as well. It wasn't because I've played other PS3 or 360 games that are better, just that the game's graphics have been hyped like crazy. I have a feeling if I went into it almost cold turkey, like I did for Gears 2, then I would have been much more impressed. Still, it is a fantastic looking game and we've only got to play the first area of the first level. Most games don't show their best stuff that early on.
On another note, the sound design is amazing.
I totally agree that it should be forbidden to compare Crysis to a console game. I was only able to play Crysis on High settings at a sub-native 1920x1200 because I only have 1 GTX 280, but it looked glorious compared to any current console games. I only hope that the next gen consoles can handle it at 1080p60.