I didn't invent this stuff.
Those numbers come from the dyno work our committee had done by George Dean for the original proposals. Unrestricted, there was a 15 hp difference. On the same size restrictor the difference was about 12. I have those dyno graphs attached to emails from George. I will see if I can figure out how to attach them to an apex post. Those test were dry sump kaw.....wet sump gsxr at much lower oil level than we have to run. When I had George run the gsxr wet sump at actual race levels it lost several more hp.
At Watkins glen this year, I ask moon where we were compared to the Kaw. He said 10 to 15 hp. That is with both engines on dry sumps.
It is true that at 9500 or 10000 the kaw is about 5 hp down.....HOWEVER...since the kaw turns a thou more rpm on top end, it will be geared lower. Assuming it is geared for the same top speed, the rpm coming out of a corner will be higher as well.....so the power is about the same coming out of a corner....and better in the top revs in every gear.
Look at this video:
www.youtube.com/watch?v=VpJJ8VVJpkM. (lap one from the rearward camera on JROs car). (note that the first v, p, and pk are lower case...all others are caps) It clearly shows JR pulling a huge lead immediately. No one is holding back here.
Even if one assumes JRO got a great run thru the infield.....and everyone else got a bad run....look at the gap get way bigger after he gets up on the oval. That is clearly a power advantage.
speed in segment 1 was abt 88mph (from Q1 when they gave us that rather than times). 88 mph = 129 ft/sec. so a 1 sec advantage thru segment one would only be a 129 foot gap.
Jerry