Tough battle. And as ondo, I too was leaning towards Mark because of variety.. But after watching these vids many times my vote is for Erik @ Austria.
I also question whether or not mark pulled that 1/2 whopper out, based on the location of the pedals and momentum of the whip and it looks like the bike is tipping as it fades to black, I'm guessing it wasn't pulled. Being this is a video contest, everyone needs to show full ride outs. It may have been just an edit mistake, but as a judge I don't know if that was pulled. Although I don't like Erik's ending ride out either, at least I know he pulled it.
Erik also had that foot tucked under the BB one hand steam spin for about 2 full rotations. Some difficult inside steam barflip stuff, some nice controlled pumping and turbines, carved whiplash, inside (hands on grips) steam jumped to an opposite whiplash type thing.
Nice riding guys!