Why is Pro Stock Dodge down on horsepower ?

After two qualify sessions....the dodge has been slowly creeping towards the top...

1 15 Tanner Gray, Denver NC, '17 Camaro 6.607 208.17 208.17
2 4 Bo Butner, Floyd Knobs IN, '17 Camaro 6.617 207.69 207.69
3 8 Allen Johnson, Greeneville TN, '17 Dart 6.622 206.86 206.86
4 6 Drew Skillman, Greenville IN, '17 Camaro 6.628 208.65 208.65
5 1 Jason Line, Mooresville NC, '17 Camaro 6.633 207.59 207.59
6 2 Greg Anderson, Mooresville NC, '17 Camaro 6.635 207.43 207.43
7 3 Shane Gray, Denver NC, '15 Camaro 6.637 207.50 207.50
8 5 Vincent Nobile, Dix Hills NY, '15 Camaro 6.670 207.02 207.02
9 10 Jeg Coughlin, Delaware OH, '17 Camaro 6.671 208.30 208.30
10 9 Erica Enders, Houston TX, '15 Camaro 6.679 206.80 208.10
11 106 Alan Prusiensky, Rockaway NJ, '17 Dart 6.716 205.60 205.60
12 52 Deric Kramer, Sterling CO, '17 Dart 6.727 205.51 205.51
13 128 John Gaydosh Jr, Baltimore MD, '14 Camaro 6.746 205.47 205.47
14 547 Mark Hogan, Dubuque IA, '10 GXP 6.838 201.49 201.49
15 538 Dave River, Maquoketa IA, '10 Cobalt 10.681 85.19 85.19