Joe Tiller had six wins against winning teams at the end of year five. He also had three seasons were he outscored opponents (in his 6 yrs), compared to Joe Glenn's 3 wins against winning teams (6yrs) and 1 season of out scoring opponents. DC is at 4 wins against winning opponents and no seasons with more points than opponents.
Tiller only beat two teams with 8 or greater wins (6 yrs), Glenn beat 3 teams with 8 or more wins(6 yrs), and DC has beat 3 teams with 8 or more wins (under 5 yrs).
Joe Tiller's 6th year is what has set him aside from the pack, and the 93 co-championship.
note: I didn't count beating 6-6 teams as a winning season, and I may have missed something( my eyes hurt today).
http://www.jhowell.net/cf/scores/Wyoming.htm