Dyk, You are partially correct, the CE of the #1 genoa is slightly aft of the #3 jib. But I think the increased force of the #1 counteracts that.
Sketching out the CEs on graph paper, I find that the CE on a class-legal #1 is slightly more than one foot further aft of the CE of the #3, measured perpendicular to the luff. Its higher too, so on deck it's about 3 feet further aft. But for both sails, the CE is still forward of the mast, and forward of the center of resistance (keel).
The class #3 is supposed to be 196 sqft and the #1 is supposed to be 294 sqft. Almost 100 square feet larger. Is their any doubt that the #1 generates significantly more force than the #3?
I haven't taken the math any further, but I have to believe that the increased force of the #1 although slightly aft, imparts more force forward of the CR than the #3.
