I think that comment was made in reference to my old A032Rs. They were lousy when cold. The R888s, however, grip just as well when stone cold (48 degrees out and less than 1 mile of driving to generate heat) as my outgoing Toyo T1S in similar conditions, and grip much better when the road surface is warmer. On the street it's hard to generate significant heat in them, but they still offer a huge improvement in day-to-day driving.
-John