Yes, I have looked at both locally here in OKC inside and out and could find no visible difference, thus my choice of the one from Sams when I bought mine in June, plus there is better than a 90% chance or more that you will ever use 6 shelves. I normally use 1-2 shelves when I smoke and seldom if ever, need 3, let alone 4. Depends what you smoke. That 40" BT holds a lot on each shelf.
If there is a difference, then it would have to be invisible as there is none visible.