I found a thread on another website about this, and I thought I'd bring it up here just for fun. Also, I had tried to sign up to the website in order to add my two cents to the question at hand, but for some reason my membership has yet to be approved (maybe the site's defunct and the members don't even realize it).
Anyway, the opening post asked what would happen if Jason Voorhees were to show up in Sunnydale and start running amok, or (the more plausible scenario IMHO) if Buffy and the Scooby Gang were to go camping by Crystal Lake. Either way it's The Slayer vs The Hockey Masked Slasher. Who would win?
One person made the observation that it would depend largely upon which season of Buffy we were talking about, for she seems to get more powerful as the series went on. An interesting, though I feel unfair, assessment. I don't think Buffy actually became more powerful as the seasons went on. I think we were simply shown more examples of just how powerful she really is. Just because she never bent the bars of a prison cell before Season 6 doesn't mean she spontaneously developed that level of superhuman strength in that episode, only that she never needed to bend prison bars with her bare hands.
Jason, on the other hand, seems to get more and more powerful with each passing sequel. In Part 2, he really didn't do anything superhuman. In Part 3, he split a man in half from groin to neck with a machete in a single stroke, and later squeezed another man's head until it collapsed and his eye popped out. Not to mention surviving the machete through the chest at the end of Part 2 and being hung by the neck in Part 3. In Part 4 he stabbed a guy in the crotch with a spear gun, lifted him into the air single handed, before firing the spear up into the guy's body. Plus him smashing through the door of the Jarvis house and surviving having a TV smashed over his head. In Part 6 he punched a guy's heart out, ripped another guy's arm off, performed a triple decapitation with a machete, pushed a girl's head through the wall of a motor home, twisted another girl's head clean off, crushed a deputy sheriff's skull with his bare hands, and broke the sheriff in two. Part 7 he did the old sleeping bag trick. In Part 8 he punched a boxer's head clean off, shoved his hand right through a rapist mugger, and seemed to have developed the ability to teleport ahead of his fleeing victims, no matter where they run or how fast.
I've actually written a piece of fan fiction on this subject. In my story, the showdown takes place in between Season 4 & 5 of Buffy (so no Dawn, and she's still dating Riley), and in the undisclosed time between Friday The 13th Parts 7 & 8 (which, believe it or not, actually lines up almost perfectly). In my story, it's only Buffy and Riley who go to Crystal Lake, for a romantic getaway. They meet up with Riley's cousins and some of their college friends (machete fodder), party, drink, have sex, and eventually it comes down to Buffy & Riley vs Jason.
In my opinion (and my story) Buffy wins.
What do the rest of you think about this scenario?