You can't wear Microsoft Hololens outside of your office, far from your desktop.
Also I'm saying that, but it's a bit silly to entertain this discussion as they are two completely unrelated products. Mircosoft Hololens is AR as in Augmented Reality while Glass is a UI floating on your face.
Yes you can assuming wifi is in range. The Hololens is great. There is no cable. The battery life is reasonable. The field of view is awful but usable. We have been using one at the office and I'm very impressed with how accurately and quickly it maps out a space.
I don't think they are so different. In fact anything glass can do hololens will do better.
They are entirely different.
Hololens is an entirely new beast.
Comparing them because both can play youtube is every journalist's mistake and uneducated journalists created that mistake.
Hololens can not be used outside in a bright day light.
Hololens can be used any where. WiFI is not needed all time for Hololens. WiFi is needed only for the APPs which needs them as in some APPs in phones. You can connect the Hololens to wifi(hotspot) in any smartphone.
The fact that you need to spell out the difference between full AR and glass also seems to show how poorly Microsoft has communicated the potential of AR.
This is not true. Hololens is untethered and there's nothing preventing you from using it anywhere. Well, nothing except the fact that it's bulkier and heavier than Glass and obscures your face too much for use in social situations.
The real reason why AR isn't better than Glass for this kind of thing is that AR tracking and recognition of objects is not good enough for real applications yet. On Glass as reported in the article you have to scan a code to identify an object you're holding. In people's imaginations, an AR device would magically recognize the object and overlay useful informational displays on it as you turn it in your hands. In reality Hololens is not even close to being able to do this, so you would be reduced to scanning codes just like on Glass.
The technology is here. It's ready. And it's already in use.
For me it was more impressive than glass which when I tried it mainly had me wondering why the photos were so much fuzzier than you could take with you phone.
Google marketed Glass as AR but it turned out to be just a Floating UI. That is why it failed imo. Hololens is what we were promised for a relatively similar price point.
It's not a 'one size fits all' situation.