the performance on the macbook pro is more than satisfacotry even on huge maps with massive fleets, full graphics and mods!
A macbook pro running bootcamp? Or Parallels or VMWare? Those are the two best emulators I'm aware of as well. I just don't really want a bootcamp partition on my mac right now....they are annoying. I might get around to it eventually, but if a Mac Pro is powerful enough to run Sins in an Emulator, I would give it a try. 
Thanks for the feedback, btw!