Good article... only thing I didn't like is the "BJ Penn ranks the highest from a P4P perspective of all teh Champions" line. GSP and Anderson both out rank him IMO, not to mention GSP even BEAT him...
I hate BJ.
but GSP beating BJ at 170 doesn't take away anything from his P4P value. it only prevented it from increasing had he won a fight against a 155 contender instead.
It's pound for pound, and BJ/155 pounds has proven to be very dominant destroying Sherk, Stevenson and Florian without any kind of trouble.
BJ at 170 isn't really P4P worthy but at 155 he's still a top dog and very close to guys like Anderson and GSP.