WTF?

I've stumbled on the idea for the game after seeing this chart describing the kind of fire extinguisher to use depending on the kind of fire you have to fight.

I wanted to use as much of that chart as possible, but had to change several values as the player with the fire cards had more chances of winning. The orange cells are where I've flipped the values to get a more balanced game. Still, the player with the fire cards has a slight advantage.

For the two players mode (Challenge a friend) I wanted to avoid using a backend and came with the idea of passing the game data as part of the url. It works, but it's frustrating to copy-paste a new url in each new phase of the game and, besides, players can easily cheat.