True. Then going by Steam's VR statistics from August (https://store.steampowered.com/hwsurvey):

46% for all Oculus types 36% for Vive+Index

Well, Oculus does seem to be more popular and perhaps that is what the parent meant by Facebook "winning" VR segment. To me "winning" sounds more like total domination, where any competition is near a statistical error. This doesn't seem to be the case here (though I admit Steam statistics may be skewed towards Vive/Index).