If there's a macos port, it'll of course be better optimized. I play CS2 on mac from time to time. It runs really smoothly on my Studio, but if it were a native port I could run it on a macbook air.
from the point of the dev - work done on the port will rot very soon, return of investment is really low. Also, the studio may not exist at all by time changes will be necessary - as fast as few days after public release nowadays :(
from the point of the dev - work done on the port will rot very soon, return of investment is really low. Also, the studio may not exist at all by time changes will be necessary - as fast as few days after public release nowadays :(