Re: Sadly...
AFAIK their turbo stepping is far more aggressive, with superior RaceToIdle characteristics - on a general desktop platform, a Core processor will generally be a bit quicker and use a bit less power (thanks to most desktops running single threaded apps, which also helps).
As I say, I'm glad AMD are around - they fill a certain niche (which is not an unpopular one), and they keep Intel fairly honest. Without AMD, we'd probably still be running Netburst architecture intels on a process shrink...