As someone who was part of the process of determining the NCAA set-up there is one simple fact that you all should know. This is the system that the NCAA Cabinet wanted. It was never the best system, but one that was crammed down the coaches throats due to bad politics. I won't go into that. BUT, when we take a look at the actual differences in the "regionals" prior to the NCAA meet they are strikingly similar. At the end of the regular season (the 48th best performance) here is just a snippet of some similarities.
WEST vs EAST (the actual 48th best performance from regular season)
W100: 10.62 vs 10.62
W200: 23.80 vs 23.80
W1500: 4:23.38 vs 4:21.88
W5000: 16:31.41 vs 16:30.42
W4x100: 45.31 vs 45.28
WHJ: 5' 8 1/2" vs 5' 8 3/4"
M100: 10.47 vs 10.43
M400: 47.04 vs 47.06
M800: 1:49.66 vs 1:49.89
M1500: 3:45.94 vs 3:45.34
M5000: 14:03.88 vs 14:03.53
M400H: 52.15 vs 52.57
MLJ: 24' 4 1/2" vs 24' 3 3/4"
MHJ: 6' 11" vs 6' 10 3/4"
What this shows is that during the regular season, after thousands and thousands of performances the two region are actually very similar in the final product. What appears to change is the actual region competition, which then leads to the actual NCAA competition.
There are only a few events where one could see a significant statistical difference between regions, the Combined Events (west much better), the women's PV (west much better) and the women 1500 (east much better).
Unfortunately, all this data is nice but when the athletes get to the NCAA meet much changes.
No matter what in any qualifying system balance is what is the goal. Based on the regular season actual performances the two regions are well balanced. Also, if we look back at 2010 and 2011 it looks the same. So while I don't like this present system, if we simply ask does it balance out the regular season so that the same type of athletes are going to the regional championship (first-round competition) then the answer is yes.