Your overlooking something. The game had NEVADA in it. U of N is in RENO. Lines are created to generate equal betting, not predict scores. SO what fan base to you think has a easier time placing bets. Ones that bet illegally through bookies across the country. Or ones that walk across the street to their sports book??
It's not quite that simple, otherwise you could get rich by simply fading Nevada and UNLV every week.
Not to mention that it was a 3 point win by Misery barring one really, really bad flag "wave off" for the pic block inside the 10.