Hard to give it just one rating since it's a DS/sports game, but overall a lot of fun!
Compared to all other games on any system, that's where the 7.0 comes from.
But as a sports game on a handheld system, I have to say it very accurately represents its big brother console versions so in that aspect I give it a 9.0.
Now for the review- As for graphics, it's a DS game so there's not much to expect. However, the camera is exactly like the PS3/360 versions so it feels just like a regular FIFA game. The gameplay is a great representation of the full sized games, although some shoddy AI kinda puts a damper on the fun sometimes. The goalie on your team is always really awful, regardless of the difficulty, and sometimes when you switch players it won't let you switch to the person next to the ball. So say there's a big juicy rebound sitting there for your striker- sometimes you can't bury it just because the controls aren't working correctly!
I'd say if this is the only version of the game you want and/or can afford, go with it. The manager mode isn't quite as detailed as the regular version but like I said before, this game is a very accurate representation of what a FIFA game is supposed to be like, only on a smaller screen.