Ok, here you go...
The MD game was the largest differential from the spread all yr except our first game, against MVST where we won by 51 pts.
We're 10-8 ATS this year, hardly outperforming Vegas' opinion like you say.
However, I'll now do my best to spin the stats to make your argument for you the best I can. This is cherry picking but since Pitt, we are 8-4 ATS beating the spread by an average of 4.4 points, still a far cry from 16.5 pts the OP has today(depending on which site you use).
For the season, 10-8 ATS with an average butt whooping of the spread by 2 points. Yeah, Vegas is pretty lame.