AP: Windows XP to get faster than Vista?

An Associated Press report revealed testers of the latest Windows XP service pack update found XP to be “50 to 100 percent” quicker than Vista.   XP Service Pack 2, or SP2, was tested against Vista.  Windows responded by saying it was too early to be sure of the results, but speculation is that even anecdotal reports of XP out-performing Vista might keep businesses and consumers from upgrading to the new system.