Don't Fear the One-Shot

It takes a lot more prep for the aspiring and enterprising GM to turn a roleplaying game into a one-shot event that anyone can sit down and play. But come on, why should the tabletop gamers have all the fun?

I was told there'd be no math!

Recently the Distinguishing RPGs chart came to my attention, and it has kind of a cheap dig in it against two systems I rather like. Worse, the dig is not just unfair, it's done for the wrong reasons.