I dunno, I don't have any numbers on hand, but it's pretty blatantly obvious that everyone gets sick in VR when they move around. I've never seen someone claim otherwise except this dude and a few random wackos on VR subreddits.

The closest I could come to any scientific data is third/fourth hand, so it's not really going to settle any arguments, but here you go: https://www.reddit.com/r/oculus/comments/4woycf/what_are_the...