That was a well-played Cultural victory, and pretty fast too on the ending date!
I was surprised that you didn't found both of the early religions (Buddhism/Hinduism); as the only civ on the map that started with Mysticism, I'd expect Saladin players to be able to grab all three of the early faiths if desired. You just have to remember to go Meditation/Polytheism instead of the other way around.

Anyway, a thought for future such games.
I think the drafting strategy was really sound thinking with a powerful neighbor nearby. Drafting is a lot better than many people think; I don't see it getting used nearly as often as it should be...
As far as your Legendary Three cities, I was surprised to see relatively few cottages in several of them. Particularly Medina, which was heavy on irrigation and low on commerce. With the vast majority of your culture coming via the culture slider, it's usually best to get as many towns you can possibly support. With the cultural modifiers in place, a single town can easily by worth as much as 30 culture/turn - that's a lot!
And believe me, I'm well aware of the power of the culture slider. (I have an Always Peace domination victory game report in the works as we speak, which naturally was a clinic in that sort of area.) That still doesn't mean I like the implementation of Cultural Victory in this game though, which mostly consists of turning off research and crossing fingers that the AI won't attack you.
Thanks for the report, it was a good read.