Rivals' stars

I have a question about the quality of Rivals' star rankings. I was looking at our recruiting classes year by year dating back to 2002. Our 2007 class had four (4) three star recruits compared to seven (7) three star recruits in the 2003 recruiting class. Many regard 2007 as Phil Bennet's best recruiting class ever. If that is the case, does that mean Rivals is an average to sub-average evaluator of talent?
BTW, I was surprised that Boise St. only had three (3) more three star recruits than us in 2007. Boise St. didn't have any four or five star recruits. One would think they could pull in a four star recruit after their Fiesta Bowl win. If a BCS Bowl victory only scores you seven (7) three star recruits, then what does that mean for SMU if we win our conference and a BCS Bowl?
BTW, I was surprised that Boise St. only had three (3) more three star recruits than us in 2007. Boise St. didn't have any four or five star recruits. One would think they could pull in a four star recruit after their Fiesta Bowl win. If a BCS Bowl victory only scores you seven (7) three star recruits, then what does that mean for SMU if we win our conference and a BCS Bowl?