Over the past two weeks, both VMware and Parallels released new versions of their flagship virtualization software for the Mac. First on the scene was VMware Fusion 5 (US$49.99 - $99.99), and last week Parallels Desktop 8 for Mac ($79.99) arrived. Both offer faster performance, compatibility with Mountain Lion and Windows 8, and new features for ease of use. Now MacObserver's Jim Tanous has done a side-by-side comparison of the two virtual machine apps, complete with detailed benchmarks of their performance in a variety of