lol fine, i'll bite.
first off, to me urban is about taking everyday features that you see in the streets of the cities we live in and doing something cool and fun on them. it can be a ledge, it can be a rail, it can be a set of stairs, hell it could even be a trashcan. the possibilities are literally endless. it's not about being the next kid to do a stock trick on a handrail, its about taking a feature and making it hittable.
you said " If he slides left foot forward then go to a different rail." why the hell would he do that when he has a perfectly good handrail to do that trick on right there? because he has to do something different like put the lip on the other side? the logic behind that is straight stupid.. if he had left that feature would have won. tricks are tricks. arguing about lip placement? now thats retarted.
now i leave you with a nice video from my friend ryan paul. notice the rail at 2:25. thats a gnarly rail. ryan was having trouble with it, the rail was winning. so he jumped straight over that motherfucker. gotta do what you gotta do.