I think it is all relative.
The first 600 hundred miles are getting used to the bike, breaking it in, learning the quirks, what farkles are absolutely necessary.
The next 600, you start learning where the boundaries are; how far can I lean it over before she scrapes, how hard can I launch without climbing the front tire, wow - redline comes up quick - shift to next gear. Man, the front tire is wearing strange, I should REALLY get PR2s (or PR3s). What farkles do I really need now that I know the bike.
Then the realization comes - I need to get this motor uncorked to make this bike a 1400. Pull the flies, get a full exhaust. Wow, I have 1352ccs of power!
3000 miles now on the bike and she runs MUCH better than the first 2000.