I noticed that in the "computation" comparison, Vbox was tied with the others. That's what I care about. So it seems like Vbox isn't as good at I/O and graphic

I noticed that in the "computation" comparison, Vbox was tied with the others. That's what I care about. So it seems like Vbox isn't as good at I/O and graphics. Like you said, vbox installs easily and works well. I don't plan on switching even after reading this article.