Seen this before, but had another look - noticed Charles says you get 30mpg in the Aero - I wish!
Having said that - most of my mileage is looning about locally, not touring.
30mpg is more than achievable with a Supersport - assuming you sit on the motorway.
I have used 1385l of fuel to cover 12904km - averaging 10.7l/100km (or 26.5mpg in proper imperial).
Long trips see averages from 8.6-9.7l/100km (29.1-32.9mpg)
My worst tank was 14.9l/100km (19mpg)
Quite frankly I think the fuel consumption is excellent. I don't hold back on using the throttle - but I do "lift and coast" a lot on give or take roads, carrying a lot of speed into corners - meaning I get the best of both worlds!