Hi CA sailor,
I sail on an inland lake, and we get a lot of light air days. At zero knots of wind, even trailor sailors will drift past – but let’s face it those conditions are miserable no matter what you sail. But once you get any sort of light air, the Weta will out-perform all the dinghies and catamarans. We have found in very light conditions you can almost use the jennaker in any point of sail.
So it depends on what type of sailing you are talking about. If you sail in a regular club competition where you have to take what you get each club racing day, and if what you get is a lot of light air, then the Weta can do the business. If you only sail when the conditions are right for an exciting ride, then I suggest you wait for the right conditions no matter what you sail!