Whoa, whoa. We can't have unreasonable discussions about drum-measured rolling resistance if we start taking the comfort of the rider into consideration! We should all be cramming in 130psi and just suffering for the sake of almighty speed!

And by "perform poorer" he was talking about something on the order of 2 watts. Four watts for the pair. Meanwhile, the tire I see out on the roads/trails most often is the Conti Gatorskin, which is a penalty of a whole lot more than 2 watts.