I would take a guess that its doing fairly well for itself on the xbone. Im basing that on the part about good space sim type games like this are rare on consoles, but the demand fer one has been there fer years. Its currently the best of a limited choice, and comes close to best ever on any platform.
Ye, fairly sure numbers are good but only smarties and FD have the real answers. Fer my part, Im already a multi platform gamer anyway and tbh, Im using my xbone account a lot more simply because its easier, and still looks fairly decent compared to a mid range three times as expensive pc. Long term, the future is consoles and FD know this judging on the ports to both of the biggest...bone and ps4 ^
Ports such as this are not unique, but they are a major investment which comes with certain obligations to microsoft and sony to keep the game updated. I doubt they took such decisions lightly...its a huge untapped market with so little competition in this genre ^