There WAS a difference at the LaJoya Regional last year. They used UIL Classifiactions and the finalists were not really the top 10 scores like a normal regional. I don't recall for sure, but there was a certain number of finalists from each classifiaction....thus not a true top 10 competition (there may have been 12 or 14 bands). It was such long time ago.
Even though it was great to get the BOA experience in the RGV, it was a little too "feel good" for my preference.