Double the shaders and double the memory bandwidth of a 5700XT would utterly crush a 2080 Ti. Don't forget we're talking RDNA 2 here. Let's give AMD the benefit of the doubt for a moment and say they hit their +50% performance per watt. That would put an identical shader count 6700 XT (40 CUs) about 10% faster than the 2080 Ti. If AMD balls it up and only get +25% ppw then those same 40 CUs would probably tie the 2080 Ti, or at the very least beat the 2080 Super.
Either way, we're looking at the very real proposition that AMD's midrange 40 CU card is giving us top-end Turing performance. As should/will Ampere.
I know the XSX has 52 CUs and it pegged around the 2080 Super, but don't forget those CUs have to share power with the rest of the APU and the console as a whole. AMD like to overpower and clock the tatas off their discrete cards, so I can see 52 CUs on a discrete card blasted with a full 250W outperforming the XSX by some margin.
You can be very conservative, even skeptical, about RDNA 2's performance and still see the midrange models besting top Turing. If AMD don't get there then they've properly and royally messed it up, so yes I would go a step further and say if AMD can't beat the 2080 Ti with their midrange offering then there's a problem.