This is only important to 2 type of people.
1. the gamer with no next gen console and are gunna buy one within the time differance of each release.
2. the gamer with both consoles Like me. It will slow sales slightly but at most 10% due to there not being a huge number of PS3 and 360 owner at this point in the game. later down the road when prices are at wii levels it will make a bigger difference. but by then Im sure devs will be more familar with PS3 arch and it wont be a problem.
I planned on getting for PS3 due to my PSN games clan being better fit for Team fortress. but now thanks to the delay and the urge to play HL2 episode 2 and to actually play HL2 as I just jumped to Episode 1.








