I don't know who from Ambrosia will end up fielding this question, but here it is:
Although Ambrosia didn't strictly "make" Ares, they are the "publishers" (I don't know if that's the correct term for it but I hope that makes enough sense), and as such have their logo on the first screen of the product. Even though Xsera is less a product of Ambrosia (as they're not contributing to it or selling it), should Ambrosia's logo be displayed on the product? If Xsera turns out to be a faithful port of Ares, I don't see why Ambrosia wouldn't want their logo on it. On the other hand, they may not want Xsera to be under their company's metaphorical umbrella - especially if they don't like the end product.
Please let me know what your decision is on this.