13.5 is ********... there are many people who average under that and who use pure Fridrich. (I use pure Fridrich, and my best average is 14.01, and I can't even turn fast so I know I'm losing at least a second on the last layer alone compared to faster people.) Even Fridrich said the limit was "10-12 seconds" and it's definitely possible to go a bit faster than that - Breandan's 9.79 average of 12 was, as far as I know, done with pure Fridrich (and even if it wasn't, there is no doubt that he would still average in the low 10s with the standard method). Getting very fast at Fridrich is mostly about getting as high turn speed as possible without failing at recognition, and I don't think it is easy at all to know what the limits of turn speed are.