Earlier quoted context omitted.
No, it does not create "consumer confusion". Consumer confusion means consumers might be lead to think Product A, with a far to similar a name to Product B, literally is Product B. It's not at all about relative value comparison like "as good as" or "better than". You can put competitor products' names on your package , in your advertising , to make comparisons. Facebook could make ads selling themselves as "Facebook…
If someone (such as OP) believes that SteamVR can be a competitive experience with IMAX, then they can believe it can be certified or licensed by IMAX. Thus consumer confusion is possible here. And there's a difference in saying "Twice the resolution of IMAX!" (for example) and saying "It's like having an IMAX theater in your house." Those aren't the same kinds of statements.
Believing that a VR solution could be certified/licensed by IMAX is not consumer confusion, that's accurate belief. IMAX could certify a VR solution as "The IMAX Experience" if they wanted to. But hell, Harley-Davidson could certify a VR solution as "The Open Road Experience" [1], too. Still no one is going to think a headset is a motorcycle.
[1] I made this up. I'm pretty sure Harley-Davidson does not use this as a motto/slogan/trademark/whatever.