Not sure where you got the impression that star ratings are ironclad. They rated JG as a 4* dual threat QB. Has he EVER looked like a dual threat to you? One of the recruiting sites rated Dobbs a 3* pro-style QB.So, you're saying 4* QBs are middle of the SEC talent. If that's the case, we are in a world of hurt for the next couple of years.
The worth of the recruiting sites and rankings is what they say about your overall talent... not in accurately evaluating individual players. They miss too often for that. However they hit often enough that if your roster averages 3.8 stars you can be pretty confident that you have more talent than a roster that averages 3.2 stars.