Nope. Never really gave it much thought or consideration...as the purpose of my purchase was to have fun not micro manage mpg's. I'm sure if you ride incredibly responsible and baby the throttle (maybe even use the "C" mode) you can maximize your fuel economy.
Tires, tire pressure, fuel brand, oil type, weather, geographic location, riding conditions, traffic flow will all play factors on your results. You will probably have to do some of your own testing and recording results to find what is actually best for your particular case.
I'll throw a dart and say your best average will be around 40-45mpg's. I can average 38-40mpg's riding in the style that makes me happy.
I am averaging 42mph on my 2012. I am using fuelly to keep track. With 11 tanks tracked so far the best was 46mpg and the worst was 38mpg. I am not taking it easy on her either. I typically run up to 6000rpm in each gear for a normal acceleration. I like to run it through the first 3 gears to redline several times a ride just to feel the rush and use the Busa for what I bought her for.
The 46mpg tank was mostly one trip of country roads with 3 stops and cruising 65-75. I was riding with other guys and we were passing cars and accelerating pretty quicky from stops. I think if I babied it I could push 50mpg on a highway trip.