In the interview the topic was created for, this is said:
This is what is making me think you won't be able to use the one copy to play on both platforms at the same time. But the way its described by the interviewer makes it seem like the code gives you access to Steamworks features (which cross-platform co-op falls under) rather than just the extra PC copy. Which would make sense. But then again its the interviewer saying that, yet its not refuted.
Which is quite annoying as I want to pre-order the game but want the PS3 version if you can co-op on the same copy and if its not possible I'll just get the PC version.
GZ: There seem to be big differences in functionality across each of the platforms. A PS3 user with a code can access the features of Steamworks and play cross-play co-op, but only access PS3-to-PS3 co-op without. Meanwhile every PC gamer is given the ability to play with their PS3 friends, while the 360 user is restricted solely to their console. Is there a worry that the current integration of the tech could confuse some players?
JB: Yes, it is confusing and it's kind of scary that it's come to this point and how isolated all these different platforms are. Everybody's gamers, everybody wants to play the games and everybody wants to play them together, and we're just trying to facilitate that. It is a little tricky trying to explain it and there are a lot of these little 'what if' situations.
This is what is making me think you won't be able to use the one copy to play on both platforms at the same time. But the way its described by the interviewer makes it seem like the code gives you access to Steamworks features (which cross-platform co-op falls under) rather than just the extra PC copy. Which would make sense. But then again its the interviewer saying that, yet its not refuted.
Which is quite annoying as I want to pre-order the game but want the PS3 version if you can co-op on the same copy and if its not possible I'll just get the PC version.