My numbers showed 2070 was on par with the 1080Ti, but that was passmark, so grain of salt I guess.
It still beats the shit out of my 970, and anything that AMD makes. I note your chart doesn't have a 2070 as well, which could very well be an important budget contender. There are a lot of factors to graphics cards' worth. Prices are never static, and while Passmark might be good for ballpark, it's not a real world example. Even within real world tests, the 1080Ti has more memory than the 2070/2080, but the memory on the 2070/2080 is faster and I believe also has considerably higher bandwidth. Tasks at which the cards will perform better or worse will definitely vary.
There's also the question of how much can you get one new, RTX or GTX, because even though I'd be alright in getting some hardware used, used GPUs seems like a game of russian roulette. It may be 50 chamber russian roulette, but still a gamble regardless, with how many people there are on ebay (and especially craigslist) who are out to steal your money.
All of these numbers can literally change day by day, task by task, person by person. I like the 2070 because it has what I would consider to be good performance, significantly above what I have, a good value (1080Tis are still clocking in over 1000 USD on Newegg), and has the neat hardware raytracing, which while I believe to be the future, has gimmick-class implementation. Would be neat to mess around with, but I'm not sure I'd use it all the time (on any games that even support it).