According to the University of the Pacific Dental School, my DAT BIO is a 17 and my AA is an 18. My QR is a 17 and my RC is an 18. I would like to know if my DAT BIO 17 is significantly lower than a 21 in the BIO? I would also like to know if a 17 in the QR is significantly lower than a 21 in QR? Is 18 AA significantly lower an a 22 AA?