Can someone explain why participation rates are so different for bonus accumulation for casino games?

Ive seen this elsewhere but this was just the most recent example I noticed. This is 888's VIP program.

I don't play non-poker games but I was looking through the rewards system out of curiousity and found this. Why are some games worth between 5 and 20 times less points?

My instinct says it's RTP or house edge or profit margins but I don't see how the numbers would make any sense on the 10 or 5% end.

I'm hoping a more seasoned casino enthusiast might be familiar with this. Thanks!

I'm not spending these tokens, at least not yet. I think that in my case the most promising option would be to spend them on some poker tournaments.

Just a guess it looks like the highest profit margin games for the casino are the biggest contributors.

I also think they may be looking at the casinos profit per hr vs just looking at RTP.

Casinos really only do things for 1 reason, to make more money.

Games like slots are pure luck. Playing craps and blackjack however u can apply strategies and therefore reduce the house edge.

They want to get the max out of you while you are clearing that bonus.

They give u less contribution for the gamers with a better RTP wich make sens for them.