[evilduck]

I would personally disagree, anything that's GPU accelerated is noticeably laggy inside Fusion and worse in Workstation. Notification Center, Launchpad, Mission Control, entering Time Machine, they all stutter. I applaud VMWare's efforts so far, but it's not the same desktop experience like Windows inside a VM can be. Further, Apple's trackpad and the gestures they integrate adds quite a bit to the OSX experience. No PC vendor comes close to replicating that and it's something you'd have to just resign yourself to never replicating fully.

But ignoring the trackpad, pitting a full screen OSX VM under optimal but real-world conditions against native OSX, I would still bet anyone could tell the difference.