we actually can't make a re:flex disc with more toe/heel adjustment due to the material thickness to support the screw without peeling through the disc due to the inner ring or "claw" on the Re:Flex disc. The only reason for the "clawed" inner ring is a stop-gate so someone doesn't try to put the wrong disc in the wrong baseplate.
So our sizing chart is very general, shrinkage vs not shrinkage, vs. other brands; etc, we needed to be able to say sizes and not brands or even models. A lot of times, riders have no idea what shrinkage tech is let alone what model boot they riding. So I don't think it's a misleading size chart, i just think it's very general.
Honestly, you really should be in a size medium. In fact, Mikkel just switched over to Medium in a US size 11 Ion and Imperial.