Until the first curve when the best rider of the two would pull away...Come on the world is not made up of Dyno hp analysis. The rider, weight, environment, all too subjective to say one is king of the other. The are different bikes and you can't make up an expirement in order to get the results you want...
Lets say 4th gear roll on from 45 mph to terminal velocity on a straight hiway? OK Busa wins, everyone happy?
