You people are idiots.
Pointing the finger at the BR drive just shows how little you f-ing know about consoles, and how arrogant you are as a person.
Also this article shows how lazy Carmack is in regards to programming and putting the effort in, other developers have shown that they can get a fast framerate coupled with amazing graphics/physics/AI and sound out of the console in tandem. Blaming the low fps on the PS3 itself is just ignorant, and exposes his laziness. There are workarounds and methods to fix this obstacle.
Yes, ID may rectify the fps issue by launch and here's hoping, but to openly come out with that comment on how slow it is on PS3 compared to his other format versions (of which the 360 was likely the easiest to port, as explained later on), is just stupid and fanboy baiting. If this is seen as a fanboy comment, I couldn't god-damn care less. I'm just tired of developers moaning about this-or-that on whatver console. You CHOSE to release it on that format,therefore you are OBLIGED to make do, and make the best of it you can.
The quote "only a shoddy workman blames his tools" comes to mind, though... only a tool, blames other tools.
A little more time spend on the PS3 version and they'd get it on par fps-wise with the PC. Of course the 360 version's going to run at a similar rate to that of the PC, as the 360 is essentially, a PC, in a smaller box.
Lazy developers deserve little of my time and patience.
Also, I have all consoles, and I buy the game for whatever format has the most optimised and feature-heavy version (mostly PC) but I'd personally rather have a slightly slower (albeit very playable - 30fps is fine you snobs) version than having "INSERT DISC 2", "INSERT DISC 3", "INSERT DISC 4" on every so-often. Multi-disc gaming tbh is very 1990's