This seems (from a UK RAF perspective) to be faintly ridiculous. When I joined the RAF I was in front of the President of the Medical Board as I didn't fit on their charts! Being too tall & too heavy for their graphs, he put a ruler on the graph and extrapolated the lines - then looked up at me, said I looked OK for me height and weight, and passed me!
Does the RAAF not take athletic prowess into account? I know we have dispensation in the RAF for some people to body build and their uniforms are changed to accommodate body size! Suggest some sort of appeal. There MUST be a system!