Both are made by Vectorworks/Matt. The Falcon looks a lot more like an Infusion, with rounder bows than the Blade. The Blade looks more like a Capricorn. The Viper also looks like a Capricorn at the bows.

There was a picture or two posted here after Tradewinds. The Falcon is an F16, uses the same mast/sails as the Blade.