It took more than 8 years for X-yachts to sell 100 xp-44. (with near half of factory price tag compared to J/45).But if both Arcona and X-yachts can sell 50+ yachts each of a model like this in a few years
X-Yachts - Xp 44 Hull No. #100 has left the first stage of... | Facebook
I doubt Arcona has same sales figures.
The successful series of X is the X4. But it is much more of a cruiser than a racer. Perhaps that's why the J/45 is so heavy, and does not have a retractable sprit.