Nice bike that matey. Dont agree with the comment about KX and CR500's keeping up with sports bikes upto silly speeds though. The sports bike would be long gone! Unless it was on mud of course.

And an R1 or R6 would kill any supermoto at/from any speed as there just geared too low to compete. Totally different kind of bike though so not really meant as competition to a sports bike. There designed to be thrown around and mess around on, not to go 'fast'. Maybe they might keep up on a track around tight corners as you say, but anything else, and assuming equal rider skill, they would be made mince meat of imo.

I still want one myself, not an all out supermoto but maybe a WR 250/400/426/450.