But we all know that it's not size that matters
Yeah right - keep drinking the Wouter cool-aid.
Size only matters when you are talking about the direct correlation between water line length and speed, or the fact that catamarans suffer more due to added weight (crew weight) and a longer water line would support added weight better. Or that longer is better in waves, especially short steep waves we most likely sail in close to shore. And lets also remember that all cats could use more bow upwind and down.
So yes size does matter. But so does weight. And right now the F16 wins because it is light. But watch out for the lightweight 20 footer than can be single and double handed, has a spin and is way faster than a F16, and can carry weight better and is better in waves than a f16 could ever hope to be.
Sorry to rain on the F16 love fest, but it's not the be all, end all and size does indeed matter.