My blog posting points to ZDNet which has plenty of substantive links to reports of power consumption of XP and Vista.
My blog posting is an opinion based upon a news story, and while my opinion may well differ to yours that does not make it any less valid nor does it mean that it is propaganda.
No, I would not consider the demands of Vista as being part of the natural evolution of the OS, and I am quite aware of the features of Vista without relying upon Wikipedia as my reference - I have attended numerous Microsoft technical workshops, press conferences and one on ones during the development cycle and since release. heck, I have even been a Vista user since the earliest of Beta releases. None of which has changed my opinion that, when you come down to it, for your average user Vista is XP wearing a pretty dress.
And finally, this is a blog posting, nothing more. Read it, disagree with it, get over it ;)