I would add that gasoline is a highly volitaile fuild, meaning it vaporizes very easily. kerosine is a heavier fluid that is resonably stable, so when you close the container its normally liquid kerosine and air, when you close the gas container much more of the vapor volume in the container is actually vaporized gasoline then as with kerosine. when it gets cold the gasoline condenses much easier and the amount of air in the container is actually smaller then the equivalent setup with kerosine, so the gas container will crush more. gas being more voliatile in terms of vapor pressures also is why it explodes easier, the fumes catch first, if there not a lot of fumes you can actually extinguish a cigarette in gasoline cause the smoldering temp of the cig is lower then the flash point of liquid gas, however the flash point for gasoline in vapor form is much lower, hence the big boom
Sorry for the long post; I realize I have officially established myself as a dork, but thats what happens when a kid grows up being a pyro and then goes into aerospace engineering
PS If anyone is dumb enough to actually test that cig thing, I refuse to be held responsible
