Echoing what others have said, Toms lavished praise on the AMD line-up when all Intel could throw back was their P4s. I remember when the P4 EE was first released, it overtook AMD in many benchmarks and this was sort of grudgingly acknowledged with a warning note stating all the the same problems existed (heat, therefore noise etc).
It is important to bear in mind that Intel has taken a major step forward, and has the hardware out there to show it off, i.e. Core 2 Duo. In contrast, AMD hasn't really released anything new apart from some Powerpoint slides and then Energy Efficient versions on some of their CPUs (which got good reviews incidentally). Nothing new though.
Now, very soon after Core 2 Duo, we have the first 'mainstream' quad core CPU actually able to be tested and only 4 weeks away from being available to buy. Still nothing new and physical that can be tested from AMD. It's no real wonder that the reviews go the way they are going, and infact they do a very decent job of remaining as impartial as they are.
If you were watching a race, and one of the two competitors dropped a way back, and then unexpectedly got pushed back even more by a sprint from the leader, then it becomes harder to see the 2nd place person in the distance whilst the camera concentrates on the leader. A clumsy analogy maybe, but the principle is the same. Before long, everyone already knows about who and what is in 2nd place, and it becomes difficult to say anything fresh, so you end up with "yeah, they're still back there trailing".