Not sure why you're being downvoted. That's indeed what gvfs commonly stands for in industry. It's a poor and confusing name choice.
For the Gnome community this might be both poor and confusing, for the rest of us it's ... meh.
Given that the products are quite similar - both are virtual file systems after all - confusion is actually quite likely. If you're the kind of person who has reasons to speak about virtual filesystems at all (which, honestly, most people don't) you should probably know about both.
Had this been back in the day one would guess it was deliberate... but hey, everybody tells me Microsoft are supposed to be good guys these days, so I guess Hanlon's Razor applies.
AFAICT, there's essentially no overlap of features beyond the fact that they're virtual file systems. The feature sets are completely different, and there's no intersection where if you read more than a few words into whatever you're looking at you'll be left scratching your head thinking "Oh jeez, which one is it this time?"