Says who? Many many many a' laptop are far superior to my computer, and can compete with the most powerful of computers people own here.
You can get laptops with A64 desktop processors in them, FX series and X2 dual core series. They include GB's of RAM, PCI-E graphics, all the extras like DVD-burners and that junk.
http://www.widowpc.com/2005/06/gaming_laptops.php