The x-plane version comes with Cargo, Pax and they added the MRT for free to the A310, I have the A300 too. The X-plane versions are second to none when it comes to system etc. I cant wait to see the A310 in MSFS from iniBuilds, they are a top tier dev.
A little taste from X-plane, as I said I can only imagine how much better they will look in MSFS