Hey Scooby,
the topic was "which is faster", a no-brainer in a straight line, really. I think a Hollander by the name of Jaap van der Rest sailed a standard Dufour Wing to 23,7knots in about 1979, a speed which tallies up nicely with discussions on this forum as to how fast a Tornado has ever clocked down a 500m course. Anyone who remembers the Dufour Wing will say, "but how ???"
Modern windsurfing gear has moved on a bit too since then and the top speeeeed has almost doubled.
Whether you got bored of windsurfing and cut the grass in your neighborhood to finance your first Dart, or whether you gave up windsurfing to cut grass, or whether you smoked the grass, is irrelevant.
Why not have the best of both worlds, I sail cats when its windy and windsurf when it`s insane, so I only have to sit on the beach when there`s less then 15knots (ie not enough to sail cats .)