For the data to be truly relevant, it would be necessary to get the SAME sailor sailing ALL the different brand boats, in the SAME conditions, enough TIMES to get sufficient data points for a STATISTICAL ANALYSIS.
That would only show that that particular sailor is able to sail any brand of boat and win on it. And we all know sailors who can do that. So the statistics would only tell us about that sailor, not about the boats.
The only thing it would prove is that if you are a good enough sailor, you can sail any brand of boat in a formula class and be a winner, which would be very good for the formula concept.