Explanation of TPR
From FightMetric:
The Total Performance Rating (T.P.R.) is a statistic used to measure the quality of a fighter’s performance. Scored on a scale of 0-100, T.P.R. provides an easy way to measure and compare performance in any single fight, whether 30 seconds or 30 minutes long. Consider T.P.R. to be for MMA fighters what the NFL’s passer rating is for quarterbacks.
Rami provides a more detailed explanation on his site. While I have issues with it (just like I do with quarterback rating), it’s a fairly good quick-and-dirty way to objectively judge fighter performance. The graph above is organized from best performance to worst. Suffice to say, they’ve had similar careers, though Shogun looks a little better when you eliminate the first Coleman fight.