Nope, I've had conversation with one of the main guys at CR and they don't make anything off WW Gift Cards, they're just another front that WW uses to sell these GCs.
Thinking about it from WW's perspective: It gets customers spending (in some cases, very very large amounts of) money, which then locks that cash up in WW's coffers, and the liability then gets "cleared" only when the Gift Cards are redeemed (which in some cases will take months).
So WW flogs off their discounted GCs to any site that cares to offer them.