Eh, it doesn't look clear at all to me. It looks like its main advantage is slightly higher resolution than Valve Index and wirelessness. On the other hand from what I read Quest 2 only now will finally get 90Hz - this is what even old Vive provided. And Index goes beyond that - up to 120 and 144Hz. Also I wonder how Quest's screen quality compares to Index, besides resolution and refresh rate - couldn't find any information about Quest's field of view, pixel persistence or fill factor. And with Facebook behind Quest, I consider Index to be cheaper - I'll take $999 any day over $299 + my data.
I'd say it's hardly a clear "win".