My numbers are for BYU as a team
2012:
24 PER pts HIGHER vs Washington St (Riley)
20 PER pts LOWER vs Weber St (Riley & Lark)
20 PER pts LOWER vs Utah (Riley)
67 PER pts LOWER vs Boise St (Riley & Hill)
03 PER pts LOWER vs Hawaii (Hill)
22 PER pts HIGHER vs Utah St (Hill)
14 PER pts LOWER vs Oregon St (Riley)
01 PER pts HIGHER vs Notre Dame (Riley)
10 PER pts HIGHER vs Georgia Tech (Riley)
04 PER pts LOWER vs Idaho (Riley)
07 PER pts LOWER vs San Jose St (Riley)
25 PER pts HIGHER vs New Mexico St (Lark)
51 PER pts LOWER vs San Diego St (Lark)

BYU was ABOVE the opposing defense's PER in just five games in 2012 (Three Riley, One Hill, One Lark).

2011:
24 PER pts LOWER vs Ole Miss (Heaps)
14 PER pts LOWER vs Texas (Heaps)
10 PER pts LOWER vs Utah (Heaps)
43 PER pts LOWER vs UCF (Heaps)
01 PER pts LOWER vs Utah St (Heaps & Riley)
23 PER pts HIGHER vs San Jose St
14 PER pts HIGHER vs Oregon St
79 PER pts HIGHER vs Idaho St (Riley)
28 PER pts LOWER vs TCU (Riley)
10 PER pts HIGHER vs Idaho (Riley & Heaps)
10 PER pts HIGHER vs New Mexico St (Heaps)
39 PER pts HIGHER vs Hawaii
21 PER pts LOWER vs Tulsa

BYU was ABOVE the opposing defense's PER in just six games in 2011 (Five Riley, One Heaps).

2010:
06 PER pts HIGHER vs Washington (Riley & Heaps)
50 PER pts LOWER vs Air Force (Riley)
46 PER pts LOWER vs Florida St (Heaps)
26 PER pts LOWER vs Nevada (Heaps)
52 PER pts LOWER vs Utah St (Heaps)
01 PER pts LOWER vs San Diego St (Heaps)
40 PER pts LOWER vs TCU (Heaps)
40 PER pts LOWER vs Wyoming (Heaps)
0.3 PER pts HIGHER vs UNLV (Heaps)
81 PER pts HIGHER vs Colorado St (Heaps)
17 PER pts LOWER vs New Mexico (Heaps)
25 PER pts LOWER vs Utah (Heaps)
38 PER pts HIGHER vs UTEP (Heaps)

BYU was ABOVE the opposing defense's PER in just four games in 2010 (Three Heaps**, One Riley). **Heaps was below UW's average, Riley above.

So just 15 games in the last 39 were above the opposing defense's PER average:
Riley x9
Heaps x4
Lark x1
Hill x1