Honestly, I don't think it makes a whole lot of difference where The Toy is concerned. I think having so many teams, in general, causes some problems but UIL vs non-UIL doesn't really matter. Some weeks it's better at UIL games. Some weeks it's better at non-UIL games.
The only way to know for sure, though, would be for me to run some tests but, really, since there are so many games played that are mixed games, it wouldn't make much sense to separate them anyways. These mixed games make up 28.97% of the games so far this season. That's 195 games through just five weeks that wouldn't count for anything towards the rankings.