Vista UI a "Step Back" from xp

Well, there's this guy who tests computer user interfaces. He uses some pretty weird (but practical) metrics like menu lag time and mouse precision. And, new results are in - Windows Vista's new Aero interface is a step back from xp. That's right - a step BACK. Yes, menu lag and such can be changed in the registry, but what's the percentage of users who know how to do that, and what's the percentage of those users that actually would edit their registry for that kind of reason? The suggested solution then: drop Vista down to its basic or classic view ... which removes the only reason for having Vista, the shiny effects in Aero. I think the whole situation is quite funny.