Yeah, those numbers may be correct, but the fact of the matter is that most AMD laptops come equipped with POS batteries. Most of the laptops that have good graphics cards (GeForce2 Go, Radeon Mobility 7500, etc.) and long-lived batteries come with the Intel P3-M processor. In my opinion, if you're looking for a machine to do a lot of CPU-intensive tasks, you're better off with a desktop. Laptops just aren't there yet in terms of hard drive speeds, battery life, and expandibility.
That said, most of the better quality laptops (e.g. Dell, Toshiba, and IBM) are built around PIII-M processors. I'd take a better-built P3 laptop over a cheaper quality Athlon notebook any day, even if the Athlon trounced the PIII in the benchmarks. As I said before, laptops are not for running a lot of CPU intensive tasks.
Nick