This is absolutely nothing like being in VR. VR is not having a big screen on your face. VR is like this:
Right away, when you put on a VR headset, you immediately get hit by something you've never seen on any other screen before:
Scale. VR allows you to discern scale. Objects have a real world scale, which your own body corresponds to. You can, in VR, visually guage how big something is, with accuracy. You could, for example, put vive sensors on a real world object like a baseball bat, and be able to visually tell how big the bat is in VR just by looking at the sensor location. Things that are supposed to be big look
big in VR, unlike anything your TV can convey.
Scale extends not just in being able to determine how big an object is, but also in stereoscopic depth. It's not just 3D, the 3D component has a scale as well. You can guage how far something is away. VR can make you honestly feel like you're thousands of feet in the air, to a degree of realism that subconscious parts of your brain are fooled. VR can give you literal vertigo. Things like 3D movies or 3DS or things like, they never had frame of references for their depth. How big of a gap the depth was supposed to represent changed from scene to scene. In VR, depth has scale, relative to your own physical being.
It's absolutely nothing like being in front of a big tv screen.