After confirming that the Mass Effect trilogy would not be coming to the Playstation 3, BioWare CEO Dr. Ray Muzyka commented that "the most important thing is quality, so we're never going to compromise that." Does that mean that developing for PS3 would compromise quality?
Here's yet another instance of nit-picking someone's words. While most 360 fans will almost certainly assume this is what Dr. Ray was saying (taking a subtle stab at the PS3), I think it's more than likely he just thinks starting development on Mass Effect for another console would be detrimental to the momentum they already have on the 360.
Then again, maybe he was ever so subtly professing his love for Xbox since BioWare was Xbox exclusive up until now. Who knows? Dr. Ray knows, but I'm sure he'll never come out and explicitly confirm anything. That's just not how BioWare rolls. They remain morally ambiguous and let you, the gamer, decide for yourself.