Great riding by both. Very different styles.
mannie's run does have a bunch of different stuff then the last video. I really like the difficult backwards manual, cab 360, upside down peg wheelie pedaling with hands (done further in this battle), braked smith and walkover.
Leon's run does have some differences then the last run, and the concepts of turbining and pumping he is pushing in his riding is very difficult to master, and they can not be dismissed just because they are becoming very commonly seen in peoples riding. He had multiple no kick switch hand steams, multiple no kick switch foot steam stuff with both hands on the grips, tight fast mc circles, side saddle switch foot hangfive, grabbing the seat mid mc circle and swithcing to a foward steam is not as easy as it may seem. He also going double foot to switch foot on the turbines in his back wheel link requiring very precise timing on the switches. His links were also longer. (None of the above was listed in order of the combos)
Mannie's run does look a bit more original, because his tricks are not as commonly done. But the difficulty and concepts Leon is pushing in his riding, along with longer combos I believe to be more difficult. My vote is for Leon. But make no mistakes, Mannie's the Man! (Pun intended)