He did request that the specific cards be substituted for whatever the regular ones are, and that according to the impossible rules on being "identical" (see http://www.flushdraw.net/news/borgata-fires-back-at-cardmake...) they were known to be effectively marked.

I enjoy "Robin Hood" stories as much as the next person, but if he had walked in with his own deck of cards and asked to use them (and the casino agreed) is the fault with the casino or the player?