Are some F16s optimised toward a sloop rig and others a cat rig?

Would it be fair to state that if a boat was only going to compete as a single handed boat that a Blade or Taipan (F16) would possibly be better than a Viper? It appears to me that of the photos I have seen, the Viper has a fair bit more buoyancy and bit more weight as it was aimed at the crewed end of the F16 market?