Seriously, a combination of stats, lap times, potential maintenance issues...
My complaint is this .. (and please pardon the analogy) but Car & Driver doesn't test a Ferrari and focus on luggage space, parking lot prowess and how comfortable grandma is in the passenger seat for the 5 hour ride to Vegas.
These are the upper crust of performance motorcycles. The bikes most of us growing up couldn't have dreamt would ever be a reality. I say have a test to judge them as such.
I agree that most people who buy these can't ride them at 60% of their potential, but that's not the point. Do you think owners of Porsche's/Ferrari's/etc's are any different ?
IMO - talk about the "real world" shortcomings in the individual road tests. The shootout should focus on performance, with the realworld faults being a footnote.
In the same way I wouldn't want to see a test of a tourbike biased on it's horrible race track performance, why bias the race-replica bikes the other way.
Then again, you can't please everyone ... but that's how I see it.