You should choose one platform over the other, that much is certain...
 
But really, I would go with th e 360. Personal preference though.

It really comes down to which console you enjoy more, and which one you have more friends on. The PS3 does have extra Joker challenge rooms, and some Home content, but beyond that, they're basically identical.

doesn't really matter, i play most multi-platform games on my ps3, but thats just me. doesn't matter

I always like to make sure there is not some crippling defect (e.g. Ghostbusters) in either version before I go all crazy and buy one. Thanks for all the feedback so far.

Does it really matter? Just get the one you want. Does it always have to be a moral dilemma?
 
This isn't particularly aimed at the OP but I'm sick of these threads popping up every few minutes.

I like the PS3 controller more, so that's my reason, but they're basically the same, what do you want more? Joker or acheivements ?

" Does it really matter? "

I'd say which ever controller you prefer as you don't care about the Joker levels or the XBOX Achievements. For me when I buy a 360 console it will only be for the exclusives and my PS3 will still be my priority console unless a 360 copy of a game is much much much cheaper.

If you usually play a lot of games on your 360, play this game on your PS3. Yeah, I know it sounds weird but I did the same and I must say it is refreshing playing the game on another system. It still looks great and plays smoothly, and the Joker Challenge Maps are pretty sweet. They are nothing to regret purchasing the 360 version for but they are a good distraction. There are also high-def trailers and behind the scenes videos only with the PS3 version. I even think there is a PS Home "Batcave" but no one uses that. XD

" @raddevon: No I know, but you seem to have made up your mind already. Your preference on the site is XBOX 360, so I'm assuming you like playing games on the 360. If you play on 360 you'll miss out on the Joker content and the Home content. If you get the PS3 one you won't get achievements.  That's all there is to it. "

" If you usually play a lot of games on your 360, play this game on your PS3. Yeah, I know it sounds weird but I did the same and I must say it is refreshing playing the game on another system. It still looks great and plays smoothly, and the Joker Challenge Maps are pretty sweet. They are nothing to regret purchasing the 360 version for but they are a good distraction. There are also high-def trailers and behind the scenes videos only with the PS3 version. I even think there is a PS Home "Batcave" but no one uses that. XD "

this shoulda been a poll. i dunno what u should get.. 
 
PC here

" @RHCPfan24 said:

" If you usually play a lot of games on your 360, play this game on your PS3. Yeah, I know it sounds weird but I did the same and I must say it is refreshing playing the game on another system. It still looks great and plays smoothly, and the Joker Challenge Maps are pretty sweet. They are nothing to regret purchasing the 360 version for but they are a good distraction. There are also high-def trailers and behind the scenes videos only with the PS3 version. I even think there is a PS Home "Batcave" but no one uses that. XD "

Thank you for a fantastic and substantive response!  This is what I was hoping for when I posted. Here is information which I did not have before posting this thread and would not have gotten without posting this thread. Thank you so much! "

like Ahmad_Metallic I'm waiting for the PC version. The controls felt great in the demo and the extra physics stuff makes it worth waiting for (pluss, it's $10 less :D )

" @raddevon: No I know, but you seem to have made up your mind already. Your preference on the site is XBOX 360, so I'm assuming you like playing games on the 360. If you play on 360 you'll miss out on the Joker content and the Home content. If you get the PS3 one you won't get achievements.  That's all there is to it. "