I find it hard to believe that they would change the specs and affect the requirements of the standard to reduce prices for these marketing companies.
You don't have to effect the 'listing' by making it cheaper.
A listing is not at all a determination of a quality level.
I have no trouble believing that a retailer with the amount of volume that the big box stores have could get the manufactures to provide a cheaper product.
Those retailers beat the snot out of their suppliers.
But back to the OP, I believe it had to do with the warranty part of this.
