They are surprisingly well matched with the exception of the Core Sound 20 which goes like a scalded cat. The Marsh Cat "Obadiah" (S 14 on the sail) can out point the yawls and the sail on that boat is larger than what the designer spec'd. On my Navigator I can point almost as close but at a cost to speed, so I do as John Welsford says and that is sail for speed. On long upwind tacks I will have more tacks in but won't be that far behind when it's all said and done.

The green yawl is a John Welsford designed Navigator