I believe someone or a few people in those threads said AEM admitted that those numbers are not correct. Don't remember what they said regarding correcting what they have posted.
Also, if you searched, you'd find a few people have modified the side grill and routed tubing from the stock airbox to it. One would assume the AEM could benefit from this as well.
Someone has also claimed there will be an aftermarket option for that side grill available at some point that would be functional and better looking than cutting out the stock piece.