It is slow. Very slow. My Core 2 Due system (ATI X1600XT) with Vista, runs the game slower than my home 1.8Ghz XP Pro system (ATI 8500).
It takes longer to boot (48 seconds) than either my old Windows 2000 system (32 seconds), or my home XP Pro system (16 seconds). It takes longer to do everything. It is not going to get faster. Vista has too many background processes/threads to be able to overcome that deficit. It is designed that way.
Unlike XP, which Microsoft did attempt to increase the performance of, Vista will not get significantly better. It would need to just to get back to where XP/2000 was in terms of performance.
Your problem seems to be one of a perspective where you had terrible XP systems. I find this true of every person who is making the claims you are making.
Again you cannot run more software, at the same time, and have it all run faster than running less software at the same time. If you have had poorly running XP systems, then it is your own fault. Why do people have a difficult time with that logic?
Maybe this analogy will help. Take a couple of Corvette's. On one, add armor plating, to protect the driver, add bulletproof glass, to protect the driver, add a full chromemoly roll cage to protect the driver, add heavy duty springs to hold the weight, reinforce the frame to support the weight, drop in a 4.56:1 axle ratio so it can move.
Now, take that Corvette (Vistat) and run it against the stock Corvette. That is essentially Vista versus XP. Vista cannto be faster. There is no way it can be faster. There is no way it will ever be faster. It will always be slower than a good installation of XP.
The problems at MS's TechNet site are real. I am having a ton of problems with Vista on my office system.