Performance of Fm 10 mac vs PC?

hi guys, ive got a mac which i much prefer to run it in OSX, however i do also have vista in bootcamp.

i would like to know, possiby from anyone wth experience or from the developers themselves, is there any real perfoamce issues bewteeen the two systems, i remember last year it appeaed that the mac version wasnt encoded correctly and so performace was greatly lacking intially upon release.

Secondly, third party content out there to customise the game, is that compatible with MAC osx versions too, i would imagine all that content is only possible to work in the game through a PC windows version?

any real advantages vs disadvantages between the two systems for FM10?

as mentioned i prefer OSX but will play through vista on bootcamp if there are substantional benefits to the game through vista.

thanks.