I have a laptop as well that plays this game very well on all High settings (the beta at least.) I also downloaded the xbox360 beta as well.
In my own personal opinion, Im enjoying the 360 version much more. Although in the final version the content will be less (smaller people count in matches and smaller maps) in the 360 version, im just having much more fun with it.
The beta seems to be a lot more far along on the pc version though. Lot less bugs compared to the 360 which has a ton.
I played the PC beta now for a few days, and just was bored by it. Non stop camping and spawn camping (I know, but every game I played was like that, just might of been luck of the draw) and I hate using keyboard. I used the gamepad on it, but you get totally dominated by kb/m users.
The 360 version, although some camping and spawn camping, the games seemed to move along a lot better. Plus, I like the fact that I can play on m 47" tv with surround sound on my recliner.
To play on my laptop, I either have to lay on my bed with one of those weird laptop trays, or sit at the kitchen table, which isnt comfortable for long gaming sessions.
Im hoping they release the Caspian Borders map in the beta sometime soon, so I can judge what its like on a map thats not infantry only.
But so far my bid is with the 360 version, even though I know it will be inferior to the pc in terms of graphics and game sizes. I would suggest you try both Beta's, since they are both available to the public. Also, just remember, its a beta, not the final game. A lot of the bugs ect ect will be tuned/fixed. Right now the dev's want input, so dont be afraid to jump on their forums and let them know what you think is wrong and right. It can only help.
PS: Everyone is saying how the graphics on the 360 and ps3 suck horribly compared to the PC. I play on High settings on the pc, and yes it looks great. On the 360, it still looks great. Not as good or as detailed, but still 10x better looking then most games on the consoles.