Replying to Biggest progression ever in one night

okay.  So I live in Iowa right? 
So keep in mind that you NEVER see inverted tricks or anything like on the coasts.

I went out with a couple friends to the hill and was trying to work on 3's myself.  My other two friends were doing 5's and were throwing a couple clean ones.  Their names are russell kalvelage and tim rusk just for the sake of throwing out names.

Well Tim hasn't rotated over 540 in the park so he was just kindof playing it safe.  Me and russell decide that we're going to head over to the rail park to take a break from jumps, and Tim says he's gonna stay back and hit a few more.

Well we get back to the terrain park and we're looking for Tim.  We stop at the top of the lead-in to the first jump when this guy says "wait til you see this kid.  hes fucking amazing."

So me and russell are standing there waiting for this mystery steezemeister to make his entrance, and low and behold it's tim rusk barreling through gapers to the lip.

Tim throws a motherfucking cork 720.  not hucked at all.  smooth rotation throughout.

continues to throw them all night.  even got the rotation for a cork 900 but came in too steep and double-ejected.

Now please newschoolers.  Tell me how one goes from their biggest trick being a 540 to a cork 720 in ONE NIGHT?