LOL what? We are not talking about reviewing a card. This is just a guy who can get his GPU within 10-20% of a card that is a top tier card that would have cost him £150 to £200 more. And he is happy with that. I owned a 1070 and in the Pascal Owners thread several people were very happy that their 1070s could be overclocked to get very close in performance to the £200 more expensive 1080 and nobody had a problem with that.
I don't know why you guys have issues with this. For example, I have seen people ask advice on this forum about graphic cards. And people sometimes wonder should they buy card X or the more expensive card Y. And a lot of the time the advice is Buy card X as it can overclock close to card Y.
And it's been like this since nearly the beginning of GPU's. People pushing their cheaper, lower tier cards to try and reach the performance of a card higher up the range.
But, I think it's just a game that runs particularly well on the card, just like there are some games that run really poor. To tell you the truth, I would just like the next set of drivers to be solid and get back to increasing performance rather than lowering performance 
A 5% boost over the 17.11.4 drivers would be a great start to the year 