Don't forget the 1300lbs worth of down force they generate at 100mph. Tough to contend with that.BDA116 : Pretty impressive that a bike hit a higher top speed than an F1 car. However, F1 cars have a slower top speed than our Champ cars.
That said, here's a camparo of the three tracks both series run along with the best lap times in each:
Schumacher - 1.36.125
Capirossi - 2.04.604
Schumacher - 1.20.355
Biaggi - 1.44.523
Montoya - 1.38.049
Barros - 2.04.376
There's a lot to be said for four big contact patches and a low CG.