PFR will sometimes be higher than VPIP because it's been changed to only reflect when you can actually raise. Basically, if when playing, there is no raise button when the action is to you, it's not a PFR opportunity. This will be when the action is all-in prior to you and you either do not have more chips or are closing the action. PT has made this change as well. It will only happen with small samples. See this FAQ for more info and examples -
http://hm2faq.holdemmanager.com/ques...date+Utility#6