Exactly. Which is why RPI isn't a useful tool until you start getting to 20+ games on everyone's schedule, and even then I still think it's not the best tool out there.
USM has 4 games counting for them right now. Those NAIA games aren't even considered by the NCAA committee as a positive or negative. They're basically just like exhibitions.
I remember a few years back SMU was around the Top 10 in the RPI after about 7 or 8 games. They finished outside the Top 200. USM does have a decent basketball team this year, by CUSA standards, but they'll still be lucky to finish in the Top 100. That said, since we played and beat them, I'll be pulling for them to hang around the Top 100 so that it'll help our Top 100 record.