DAT percentiles.... WTF ??!!!

Hi guys, I heard that the national average DAT score for accepted students is somewhere between 20 and 21. I can't find the exact official number, but just by going through several school websites that figure seems about right. But according to the DAT performance statistics from the ADA (http://www.ada.org/sections/educationAndCareers/pdfs/dat_users_manual.pdf) such a score (20-21) is around the 90th percentile. WTF??? So that means you really have to score in... DAT percentiles.... WTF ??!!!
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums