No.... What they are saying is that for their small class (P15 or P19MX) Classes which rarely get one design starts or hold NA's, the data are skewed by one rock star

One Rock star individual represents the majority of data points (first place boat in class) and that they are racing against yardstick boats (first place boat in class) that were not sailed by some one equally skilled.

They argue that the P15's performance is unrealistic. So, they believe that they are saddled with a rating that is an error.

This perception exists because the USPN system simply can't identify enough races of MANY higly skilled P15's against yardstick boats that are equally well sailed.

In rock star dominated ratings... Ratings (where the rock star competes against mortal sailors on yardstick boats) are set and then are VERY slow to change because of the two policies of USPN. (Results from races that are deemed outliers never make the database for the class AND a change in the PN rating will only change by 25% OF THE DIFFERENCE)

Portsmouth yardstick ratings work well when you have a strong one design fleet (No rock star domination of the fleet) which then race in Portsmouth races against other strong one design classes. Thus the results accumulated indeed reflect the assumption of Portsmouth Yardstick... ( a perfect race ready boat sailed perfectly with flawless strategy against yardstick boats sailed the same way) You can subtract the skippers out of the rating when this happens.

The P15 and P19mx sailors don't believe the skipper performance was extracted from the ratings.

The US Marstrom 20's... (Two boats) The CFR 20 (one boat) and the Nacra F20 (1 boat) will never be able to get ratings where the skippers performance can be extracted leaving just the boat.