Willing to throw my hat into the ring here and say that I haven't even bought it yet because I know my pc can't handle it. I will wait for performance patches (or look at finally upgrading my 5 year old pc)
I also think they've done everything right. They called it out BEFORE release, but released anyway for the subset of players who can play, with the promise of improving it for the rest.
The ones who can play it got lucky, the ones who can't and are all pissed about it are the same ones who would be bitching if it got delayed.
Montagge