I don't think its that as much as it is hard to qualify for people. At least in my experience describing neck profiles is tough because it comes down to the beholder and the layman doesn't always understand general descriptions either. C, D, U, V? 60s style? 50s style? Asymmetric? Slim, Medium, Full, Fat? Thickness measurement at the first and twelfth frets?I have never found an official description of the neck dimensions (except for width at the nut). Could be because EBMM necks are coveted and thus a carefully guarded secret.