Um, in desktops, the P-M has a huge disadvantage, so while some tests were performed in a desktop, they were still comparing a mobile P-M against Desktop fully developed AMD A64 systems. It is tough to find reviews and comparisons of laptops. Still, Tom's hardware choose the P-M as the ultimate laptop to build CPU, and they have some info on P-M:
http://www20.tomshardware.com/mobile/20050224/dell_xps-06.html
Again, you asked for proof, and it was shown. Perhaps not in every test. But, the some quotes that I posted were the end result, after factoring in ALL tests. Sure the A64 can win a battle or three, but according to these reviews from various sites, the winner of the war is P-M.
Last thing is, go to where the true info is at.
http://notebookforums.com/index.php?
There you can see laptops made with all types and sizes of CPU's.
It is the place for Laptop info.
Check out Sager and Alienware forums.
They are not too happy with the Dell's P-M's beating them at a much lower cost.
Then compare laptop's with A64 from the top makers to laptops from Dell.
You will choose a i9300 for under $1500 without a second thought.
Here is an example of an AMD laptop with A64 3000+ and MR9700 (Acer 3400)
http://notebookforums.com/showthread.php?t=52703
Note these numbers:
3DMark03......: 3139 (714 CPU) Standard
3DMark03......: 3594 (711 CPU) O/C'd 478 / 248
Compare that to my i9200 with stock clocked P-M 1.8GHz and MR9700:
3dm2k1se = 14200
3dmark03 = 4201
3dmark05 = 1437
This is the old i9200, not the recommended i9300 and it's nvidia 6800 video card.
Even then the old i9200 with P-M beats a comparably equipped A64.
Also note the power requirements of each. 6 cell batteries work great!
EDIT: Show me please an AMD A64 notebook that can compete with old P-M laptop.
I have been searching and searching, trying to find ANY AMD laptop with better 3dmark scores faster than my old i9200 P-M MR9700 (again, a lesser unit than i9300 6800). Nothing comes close. I know they are there, but looking in Gateway and Acer, I can not find them. What does it take from AMD to beat an old P-M? Please show me.