The main difference between Rummy and Poker is that Rummy requires skills to play, while the result in Poker depends on luck. Because of this, Rummy can be legally played in the country as it's a game of skill, not a game of chance or luck. Here are some similarities and differences between the two games:
Both Poker and Rummy require two or more players to play. Both games start with the dealing of cards to players.
Arranging cards in sets and sequences also makes these games similar.
Both the rummy game and Poker give importance to the playing order and arranging cards in one's hand.
You can fold or drop out of both Rummy and Poker games anytime you want.
In both Rummy and Poker, all the players need to show their cards as soon as the winning hand is declared.
The cash one wins in Poker primarily depends on betting, whereas in a Ramee game, the outcomes depends on your skills and strategy, so playing rummy is not betting or gambling.
Rummy is primarily about how you play your cards in the game, while the outcome in Poker depends mainly on the cards you get.
Rummy is more of a calculation and estimation game, whereas Poker is based more on mere guesswork.
To summarize, both Rummy and Poker are great games for social engagement and you can win some quick cash playing them. The main difference between the two is their dependence on skill (Rummy) versus luck (Poker).