To be fair, BYU did not get to play all the teams including the bottom.

Let's guess at their record if they played an entire MWC schedule:

Colorado State 6-1 - definite loss 0-1
Boise State 6-1 - let's not even go there 0-2
Utah State 6-1 - we know this one 0-3
San Diego State 4-3 - would be a good contest, tough call, but BYU lost to worse teams, 0-4
Fresno State 4-3 - BYU would win this one 1-4
Air Force 4-3 - they beat BSU and Nevada, so loss 1-5
Nevada 3-4 - ouch! 1-6
Hawaii 3-4 - not a good team, especially in Provo 2-6
San Jose State 2-5, not again, no 3-6
Wyoming 2-5 - win 4-6
UNLV - best win in 2 months! 5-6
New Mexico 1-6 - easy win 6-6