Source on VirtualBox being faster? Couple of benchmarks I've seen put VirtualBox at considerably slower[1] and Fusion slightly to considerably faster than Paral

Source on VirtualBox being faster? Couple of benchmarks I've seen put VirtualBox at considerably slower[1] and Fusion slightly to considerably faster than Parallels. 1- https://www.tekrevue.com/2015-vm-benchmarks-parallels-11-vs-fusion-8/7/ https://www.tekrevue.com/2015-vm-benchmarks-parallels-11-vs-...