While I'm not happy to hear what he has to say in this particular case, at least Carmack is blunt and straight to the point. Most devs will lie and say that all platforms receive equal focus and other such nonsense.
ATI LIVES by its reputation on the PC.
Sadly, ATI has a reputation for crappy drivers, especially if you use Crossfire. Their Crossfire support is terrible. You often have to wait weeks or even months for Crossfire support to be added or fixed in the latest games. Even when it's "fixed," that fix sometimes just involves disabling Crossfire entirely. Same applies to anti-aliasing. I find it perfectly believable that ATI screwed up this time.
This comment was edited on Oct 7, 2011, 23:42.