In 2006, George Mason made a surprise run to the NCAA final four. This year's team is nowhere near that good and isn't likely to even make the tournament. They've won 2 games against solid teams in the past few days, so they aren't pushovers, but the Hoos are a more talented and veteran team.
If you're only memory of George Mason basketball is from their 2006 final four run, then you are way out of date. Yes, the Patriots had some good teams during the mid-2000s, but they have fallen from those lofty heights since the departure of head coach Jim Larranaga.