OK, after several calls to Michelin, I finally got the compound thing sorted-out. The street version Power One is similar to that of the Power Race medium, but with faster warm-up temps in low temperatures, and humid/wet conditions. The 'Commercial' version uses 2 compound technology. They are considered 80% street and 20% track, while the 'Competition' version is 90% track and 10% street.
I had a difficult time getting even this little bit of information. What Michelin did send me is linked below. :)
Michelin Power One - Street
Michelin Power One - Competition
