Ok Folks My shot,
You are make more from casinos (single player) on average, since the deposit per player is higher than poker rooms. Just think about blackjack, slots and roulette games. Few people sign up to play only pennies. The down side is if the player hits the jackpot and your casino carry negative balances.
On the poker side, the average deposit is way less than casino, but there are some large depositors if you are lucky to get them that will make a huge difference in commissions. You need a large base of players to make money from poker (revenue share) otherwise CPA should work better if you can’t deliver many players. The good thing you don’t get a negative balance, they are very rare (revenue share).
So, promote both, and take a chance. You never know when a whale will hit your site, for poker or casino.
NOTE: THIS IS MY EXPERIENCE PROMOTING CASINOS AND POKER ROOMS. SO, STATS CAN BE DIFFERENT BETWEEN AFFILIATES.
Hope this helps,
:hattip: