Good point! I didn't even notice the trend like that. But if you were to say there are two teams (with no names attached) and just say both are a 3* school and give those records would you say one should be a 2* now and the other a 4? Maybe, but I would say KU should be at least a 3 star and could live with Stanford and 4.
Not many teams have even played in a BCS Bowl let alone won one. And they got an at large bid, they didn't just win an average conference like UCONN.