2 vs 2 - an extreme psywar

"Dual Clash Poker" is a card game in which two pairs play against each other. Every player has a set of eight cards only: the cards 1 to 7 and one Joker. The rules are quite simple. Everyone has to play one card per round and the highest number wins. However, if two players play out the same number, the cards will outrival each other and the next highest number will win the round. The pair that manages to get four coins first, wins the game. Which pair can trump the other and win before the other does?

• Players: 4
• Time: 20 min.
• Age: 7+