Jet fuel burns faster because it is more refined. Its among the lightest of the petro-products. Comes from high within the bubble tower.

Gasoline, on the other hand, burns slower, yet is more explosive due to the higher oil content within it. Just a few levels above diesel in the bubble tower.

The reason you can put matches out in both of these are because its the fumes that are combustible when evaporated (Gas evaporates faster) into oxygen rich environment, for lack of a better term.