Using your snap #s:
Jennings 30 snaps 178yds (5.6/play).
Compared to:
9 snaps -24 yds (-2.7/play)
Did the “other” 30 snaps have importance in the game, yes I never said otherwise.
Did the 9 plays that Jenning didn’t play cost SMU the game in a 3 pt game? Very likely that they did!!