So ArsTechnica and AnandTech both came away impressed with Windows RT
I guess the real question is why The Verge gave it a low score but I think it has to do with the way it was reviewed. David Pierce said that he was looking forward to the convertible form factor but he didn't like it because "the tablet has some build quality issues, and the whole laptop element is subpar because a 10.1-inch laptop doesn't work."
The build quality issues are on Asus's end but I think its quite unreasonable to expect a tablet that comes bundled with a dock to perform as well a laptop, especially since its running RT.
ArsTechnica and AnandTech both knew what they had and really like the Vivo RT for what it was aside from the hardware complaints.