I'm a Chinese player.
Recently the progressive pineapple is much more popular in China now, we even have jokers which can represent any card.
When you get in to FL, xxx in top =17 cards, AA =16, KK =15 ,QQ =14.
Meantime when you get flush straight, quads，top xxx, you can get into FL again and get sames cards last turn you have.

In this kind of game, we usually place for AA top more often than others base on experience, do any one know the math mode between the 14-17 cards FL with joker.