2011:
Utah played 11 teams (USC, UW, ASU, Pitt, Cal, OSU, Arizona, UCLA, WSU, Colorado, GA Tech) and went 6-5.
BYU played 4 (Ole Miss, Texas, Utah, OSU) and went 2-2
2012:
Utah played 9 (ASU, USC, UCLA, OSU, Cal, WSU, UW, Arizona, Colorado) and went 3-6
BYU played 5 (WSU, Utah, OSU, Notre Dame, GA Tech) and went 2-3
2013:
Utah played 9 (OSU, UCLA, Stanford, Arizona, USC, ASU, Oregon, WSU, Colorado) and went 2-7
BYU played 7 (Virginia, Texas, Utah, GA tech, Wisconsin, Notre Dame, UW) and went 2-5
2014:
Utah played 10 (Michigan, WSU, UCLA, OSU, USC, ASU, Oregon, Stanford, Arizona, Colorado) and went 6-4
BYU played 3 (Texas, Virginia, Cal) and went 3-0
2015:
Utah played 10 (Michigan, Oregon, Cal, ASU, USC, OSU, UW, Arizona, UCLA, Colorado) and went 7-3
BYU played 5 (Nebraska, UCLA, Michigan, Missouri, Utah) and went 1-4
2016:
Utah played 10 (USC, Cal, Arizona, OSU, UCLA, UW, ASU, Oregon, Colorado, Indiana) and went 6-4
BYU played 6 (Arizona, Utah, UCLA, WVU, MSU, Miss. St.) and went 3-3
So the totals are 30-29 (51%) for Utah and 13-17 for BYU (43%). If we counted BYU as a "P5-equivalent" then Utah's total would be 35-29 (55%).