I'm a freak of nature.
No, I'm not sure - because I know nothing about fitting bikes. However, the frame size on the bike is actually smaller than the last bike I had (the aforementioned trek 7.3 fx that I put a few thousand miles on.) The guy who fitted me just got done with his "Specialized 3D Fit Training!" nonsense. I know it's all flash and gimmick, but I realize that this professional probably knows more about it than me.
And, upon hearing that the Thomson seat post is superior.. well, yay I guess. Now I just can't wait for this weekend for a nice Houston ride.