In reply to Wuck fit:
Why stop there? Why not say that Font grades are unsuitable for anywhere but Font as well, after all, Font is such a different style of climbing to any other place that "it's almost a completely different sport." There's bound to be some kind of cross over between grades, after all, they reflect the difficulty of a climb. Of course trad grades also reflect the serious nature of a route, but it's perfectly possible to give a route like Lord of the Flies an accurate French grade. So what you're saying is that Grit itself doesn't lend itself to the use of French grades. Right, so Grit is really that unique is it? Nothing like the 8a slabs they have on the continent, or The very Big and the Very Small. So what? It's grit, it's not some kind of mysterious rock that requires some voodoo charm in order to climb it (well, no more than Font). Grit is rock, if you stuck a few bolts in it, it'd get a French grade, simple as that, saying that it's not comparable stinks of arrogant grit worship IMO.
Besides all that rubbish, my point in the first place was to show that there should be a distinction between headpointing and redpointing. By facetiously comparing End of the affair with a sport grade of Fr7a+ (a piece of sport climbing piss, in relative terms), I was pointing out there is a great deal of difference between climbing a sport route and climbing a grit "head job".
I'm sorry if that wasn't clear enough in my first post, or any of the other related posts following it.
Good luck with sorting out those wits of yours.
Gruff