If they were serious gamers they wouldn't be recommending Vista. From a gaming perspective, there is no DX10 game out that shows enough in DX10 mode to justify Vista. Even for Crysis you can obtain almost identical results with a .cfg file edit.
As you said, "Lots of RAM, lots of speed. And XP." is where it is at. I want to get a laptop for internet, and classic games that are getting on a bit (Fallout series, System Shock series, Deus Ex, Worms etcetera).
No way in hell would I want Vista for that.