hmmm
IMO it depends on the members or the crowed of the affiliate
some of them are only interested in poker only or blackjack
and less interested in casino or rummy.
on the other hand you can find alot of affiliate sites that contain most known forms of online gambling to people who like to gamble and try new things
so i believe on that case traffic would be the same.
its all about finding the ones that suits you
hope this helps a bit :cheers: