Its highly dependant on a number of factors, the principle your broker
is probably going on is the waterline length, the longer the boat the
fast its hull speed. that why they built such huge yachts in the early
20th century(long and skinny). The the planning hull was developed
which shattered all the big boats dreams!! To answer your question
maybe up wind they both do the same speed but on a beam reach i wold be
surprized if the cat didn't win.