UFC 172 Crash Course: Jon Jones vs. Glover Teixeira By: Jeff Wagenheim, Sports Illustrated
"There's only one No. 1. That might sound self-evident but it's not, especially in the UFC, where title belt-wearing No. 1s come in nine sizes. (OK, eight sizes, since there are both men's and women's 135-pound divisions. Whatever.) How do we put these champions in a pecking order? We compare them using subjective criteria.
"So sometimes there are two pound-for-pound No. 1s: yours and mine. Sometimes there are even more, which was the case when Anderson Silva had a healthy leg and was at the peak of his magicianship, when Georges St-Pierre was still fulfilling his obsessive compulsion to thoroughly dominate, and when Jon Jones burst on the scene like one of those merciless winter storms he withstood while growing up in central New York. Silva was treated as the best of the best by most, but GSP had his devotees and Jones gradually drew blown minds in his direction."