Intel is akin to a Toyota Camry as AMD is a Scion FR-S. On the Camry side of things, presuming the Camry has a V-6, it'll utterly smoke the FR-S, in the quarter mile and 0-60, it's much more practical, room for six and a big roomy trunk. The FR-S is less expensive but less practical, sits lower, a much smaller trunk a non-existent back seat and has proven to be much less reliable. Then again, the FR-S is a zooty two-door, rear wheel drive, and an utter hoot to drive, while the Camry is . . . a Camry.
Having just purchased an AMD Kaveri A10-7850, I've been having fun playing with the newness of the chip, yeah, sensors don't work, the Radeon (ATI) drive is butt-slow and Catalyst is in beta. Still I'm pretty sure that Kaveri has more under the hood than is initally obvious. For Radeon cards in the 4000,5000,6000 range, the open-source driver is neck and neck with the proprietary Catalyst driver. The 7000-8000 R7, R8 series has a ways to go for now but if those two drivers can start sharing more, everyone wins.
Just to let everyone know, my new Kavei is about as fast as my Intel Core I7-920 in most things and faster in others. As for gaming, I'm a Linux weenie, how many AAA games that really stress a GPU are even available (yet?) for Linux. Yes my gaming system is an Intel I7 and an nVidia 660 TI video card while my play system is my new Kaveri. I enjoy playing with Linux, trying out the bleeding versions of Mesa and the latest x11-driver-video-ati but if I'm going to waste time playing games in Windows, it had better "just work".
Intel needs AMD to keep from being a monopoly so instead of bashing either company, embrace them both, it is a nerd thing after all.