Macbook Pro 9600 vs PS3 (Ha Ha?)

Hi all, 
 
I'm buying a new Macbook soon and was thinking of springing for a 15" model with a 9600m GPU (as opposed to the much cheaper 13" with a 9400m). Can anybody with personal experience tell me how the 9600 would stack up against a PS3, which is my only other reference point? At native resolution (1400 x 900), what are we talking about - graphics that are 20% as good as a PS3?  50%? Not even worth equating? I haven't a clue (obviously).
 
I know this is a vague and wishy-washy question and these things aren't easily quantifiable. But I've never seen a MBP running games in Boot Camp and Youtube videos are too low-res to be trustworthy. If the 9600 was hilariously pathetic next to the PS3, I know I'd never use it and would have wasted a lot of cash.  I'd really appreciate some advice!

It's a MacBook. Don't waste your money on a MacBook if you want to game on the move, get yourself a Windows-based Gaming laptop for the same price with far superior specs. 
 
The 9600m is not a great card, don't expect to be playing any new games at anything beyond low/medium settings.

Thanks, but I'm definitely getting a Macbook of some kind. I know I could do better gaming-wise with a Windows machine, but I'm not willing to give up OS X just to get some games in on the go. I'm just afraid of spending all that extra money to get a machine that, while being much better than it's little brother, is still fairly hopeless. 

" Thanks, but I'm definitely getting a Macbook of some kind. I know I could do better gaming-wise with a Windows machine, but I'm not willing to give up OS X just to get some games in on the go. I'm just afraid of spending all that extra money to get a machine that, while being much better than it's little brother, is still fairly hopeless.  "

Thanks for the replies. I've been doing my gaming on a PS3 but there's a new baby in the house, so I can't be squirreled away in the Man Cave playing Killzone 2 all evening ... Just wondered what my portable options were.  
 
Looks like I'll just have to let gaming drop off for a couple of decades! 
 
Edit: just re-read this and realised it sounds like I'm complaining about having a baby. Nothing could be further from the truth!

"Just wondered what my portable options were."

Just throwing in my experience with my macbook pro, but I can run most of the games I want too with it on boot camp. Games I've played on it are The Orange Box, Counter Strike Source, Star Wars Republic Commando, Killing Floor, The entire Legacy Of Kain series, Painkiller, S.T.A.L.K.E.R: Shadow Of Chernobyl, Diablo 2, Doom, Doom 2, and Batman Arkham Asylum. All of these run perfectly and quite a few run near-perfect at max settings, and this is a macbook pro that I bought around 2 or 3 years ago.

@ Biohazardous: Really?! Even Batman: AA? That's impressive. Now I'm all confused.  
 
More than usual, even.