Then I probably screwed something up. I do that a lot. Maybe somebody with less screw-up tendencies can perform a similar experiment?
Or play some unrated live games and watch for when black's clock gets down to one minute.
I mean, you may have done it perfectly it's just completely not what I'd expect :)
This is the ultimate joke, I would say. On what basis they say it is fair? There is not statistical evidence to say 6 minutes Vs 4 minutes is fair. Should it be 5minutes Vs 4 minutes? or 40 minutes Vs 4 minutes? Well nobody knows.