Coronado's high finish, led by Madeline Morland, helped propel 5A Region 5 to the top score among 5A's girls regions at state. Photo by Alan Versaw.
Over the years, I've probably heard more conversations about the "balance" of the 5A regions than of any other classification. At least part of this would seem to have to do with the fact that the 5A regions are more gerrymandered than the regions of any other classification. Other than 5A Region 5, there is no clear geographic identifier for any of the 5A regions.
In any case, here's what we get when analyze this years 5A girls regions at state (the number in parentheses is the number of teams from other regions placing behind the last-place team from that region):
5A Region 1: 7-13-18-20-24 = 82 (1)
5A Region 2: 2-8-9-21-23 = 63 (2)
5A Region 3: 3-6-15-19-24 = 67 (0)
5A Region 4: 1-10-11-14-22 = 58 (3)
5A Region 5: 4-5-12-16-17 = 54 (7)
And, honestly, just by random distribution of places, the regions scored about as close as you could possibly expect them to place this year. 5A Region 5 scores as this year's toughest region--and I doubt many folks would have predicted that before the season started--but the difference between the actual and "expected" values probably does not reach the level of statistical significance here.
In short, you could make a strong case that the 5A regions reached parity this year--at least for girls.