Simon,
Are you trying to upset people?
When you are referring to the 2000 bonus, this is a bracket race. The name of the game here is reaction time and getting down the track as consistently as possible to the time you post as your target, without going over it (faster). Wins in this class are at times measured in hunderths or thousandths of a second.
From my understanding, your argument becomes progressively more viable the slower the bike is and the more functions the bike has to either help you accomplish consistency (like air shift) or directly does for you(like auto trans)
For example, someone riding a foot shift 9 second methanol burning stroker big bore cb750 drag bike will have a MUCH harder time trying to be consistent compared to a stock power level Hondamatic.
That said, the level of consistency and accuracy that exists in this class is very impressive. That's not to say that I am particularity "into" this kind of thing, but to compete at the level required to win a Man Cup event would require more than just being good at letting out the clutch. Your reaction time at the tree is not an easy thing to master I'd think, and it's a big part of drag racing.
Road racing is VERY challenging and certainly has more dimensions to it so to speak. So from the perspective of a veteran road racer, I can see how it would appear easier than it is.
George