FS/SM class in Comp vs FSS cars?

[Mike Schwartz]

On thing that I noticed at Maple Grove was that of the three FS/SM cars entered in Comp, all were slower than the cars entered in Factory Stock Showdown. Is there any particular reason why the Shootout cars are so much quicker? I had thought that the rules packages would be similar.

COMP
3 1737 FS/SM Don Belles, Collegeville PA, '22 Camaro 7.831
8 3662 FS/SM Scott Libersher, Wilmington Il, '23 Camaro 7.897
13 1375 FS/SM Michael Letellier, New York NY, '17 Camaro 8.008

FSS
1 326 Del Holbrook, Redford MI, '18 Mustang 7.642 181.20
2 5 Mark Pawuk, Akron OH, '21 Challenger 7.667 181.67
3 B346 Lee Hartman, Boardman OH, '21 Challenger 7.668 179.23
4 7 David Janac, Caldwell TX, '19 Mustang 7.670 179.88 179.88
5 9 Anthony Troyer, Alva FL, '18 Camaro 7.687 178.66 178.99
6 3 Aaron Stanfield, Bossier City LA, '23 Camaro 7.692 178.83
7 4 Lenny Lottig, Meyersdale PA, '22 Camaro 7.693 179.90
8 313 Jesse Alexandra, West Bend WI, '23 Camaro 7.694 176.17
9 3397 David Davies II, Kirtland OH, '21 Challenger 7.696 180.67
10 439 Stephen Bell, Shreveport LA, '18 Camaro 7.703 178.78
11 3662 Scott Libersher, Wilmington IL, '16 Camaro 7.711 176.49
12 212 Ricky Hord, Kissimmee FL, '18 Camaro 7.719 179.56
13 107 Doug Hamp, York PA, '20 Camaro 7.724 175.71 175.71
14 3805 Kevin Skinner, Grove City OH, '19 Mustang 7.729 177.98
15 1 David Barton, Sinking Springs PA, '22 Camaro 7.755 176.67
16 1677 Carl Tasca, N Kingston RI, '16 Mustang 8.206 169.30