Make Model
Honda CBR 600F3
Year 1997
Max Power 105 hp / 76.5 kW @ 12000 rpm
Max Power Rear Tyre 96.3 hp @ 12100 rpm)
Max Torque 66 Nm @ 10500 rpm
Wet Weight 206 kg / 454 lbs
source HERE
Make Model Honda CBR 1100XX Super Blackbird
Year 1998
Max Power 164 hp / 112 kW @ 10000 rpm
Max Power Rear Tyre 141.4 hp @ 10100 rpm
Max Torque 124 Nm / 12.6 kg-fm 91.5 ft.lb @ 7250 rpm
Wet Weight 254 kg / 559 lbs
source HERE
OK so you are carrying 50KG less weight but have 45.1 less HP at the rear wheel, 58 Nm less torque. Are you sure they are really gunning it?
The super blackbird used to be the fastest production bike around... but then again it could be a case of you hitting your top speed faster
could be its a twisty road where a 600 with a confident skilled rider can best a more cautious rider on a big heavy rocket.