Benchmarks don't lie.
(Desktop Market-->) Any Intel quad is superior in most benchmarks to any AMD quad.
Yes when you run singlethreaded applications or applications that don't use a lot of memory and can take advantage of the speedy LARGE L2 cache.
If Intel are so good, why have they totally changed the design for Nehalem?
In fact, Nehalem is even more designed to run small threads than phenom.
L2 cache on Nehalem is 256 KB – L2 cache on phenom is 512 KB
L3 cache (yes, Nehalem has copied phenom design) is 8MB – L3 cache on phenom (65nm) is 2MB and on the next 45nm will be 6MB.
Nehalem has a memory controller as AMD Phenom. The old FSB solution is gone.