In the article to which the link from the original posting of this thread points, there is this text:
"For example, in a recent test of each company's top CPUs, a system with Intel's 2.53-GHz P4 edged past a PC with an Athlon XP 2100+ chip (running at 1.73 GHz) in PC WorldBench 4. "
Whoever did this comparison is a bonehead. The AMD 2100+ is meant to be compared to P4 at approximately 2.1 GHz, not a 2.53 GHz part. By the measure of this test, it again suggests that AMD is better in the wording "edges past" (i.e. it takes a 2.53 GHz P4 to beat a 2100+ Athlon). Friggen goofy, and another reason to throw out the MHz/GHz measurements.