There may be more issues going on with his sizing than length and width. It could be the last/mold of the model as well. A professional, who has years of experience in measuring and feeling the foot inside the shoe, is going to be able to diagnose potential arch issues and other stress points. No one here can perform the analysis on his sizing, but based on what he wrote (in all of his posts), he may have gotten a sloppy recommendation based on a number of errors in thinking.
I know that many forum members buy their AE shoes and boots unseen over the internet, and unless they know their exact size and last from either personally being fitted or by trial and error . . . then it is blind shopping.