LA Noire - Which system?

Firstly please keep fanboy comments to yourself.

So I have a PS3 and a 360 and I'm trying to decide what system I should buy LA Noire for. I do most of my gaming on my 360 as I'm not a fan of the PS3 for shooter type games.

But I'm going to assume that the graphics are better on the PS3 and therefore it will be easier to pick up on the visual ques this game uses on the PS3?

Is this a fair assumption or just crap?

Your input would be appreciated.

Cheers