Judging from AMD presentation (and the message that AMD is trying to pass - that it has a card that can compete with 3090) as far I can tell we would have in 4K:
(I made the assumption that Rage+SAM brings around +5% on average more performance, this certainly don't hurt AMD because for example if Rage+Sam was more, let's say 10%, this would mean that on a 10900K w/t Rage, 6900XT is just at 3080 level...)
3090 = 6900XT with Rage & SAM (Zen3 with Rage)
3090 = +5% 6900XT (10900K w/t Rage)
3080 = -2.5% 6800XT with Rage & SAM (Zen3 with Rage)
3080 = +2.5% 6800XT (10900K w/t Rage)
3070 = -13% 6800 with Rage & SAM (Zen3 with Rage) (13% margin is 15% markup, which correlate well with Coreteks claim of +15% perf vs 2080Ti in select AMD optimized games)
3070 = -8.5% 6800 (10900K without Rage)
The thing is that AMD's 3080 results in Borderlands and Gears 5 are too low, for example in Gears TechPowerup achieved 84.4fps in Ultra preset with i9-9900K@ 5.0GHz. Also the game suite that AMD used is not exactly in Nvidia's favor. With more games tested I think the average results will be at least +2.5% in Nvidia's favor and we will have:
3090 = +2.5% 6900XT with Rage & SAM (Zen3 with Rage)
3090 = +7.5% 6900XT (10900K w/t Rage)
3080 = 6800XT with Rage & SAM (Zen3 with Rage)
3080 = +5% 6800XT (10900K w/t Rage)
3070 = -11% 6800 with Rage & SAM (Zen3 with Rage)
3070 = -6% 6800 (10900K w/t Rage)
I think that AMD is expecting (tomorrow-17 November?) Nvidia to announce 3080Ti 12GB (312TC, $999?, -2% from 3090?) and 3070Ti 10GB (232TC, $599?, -11% from 3080?) and since 3070Ti will have better perf/$ vs 3080 in contrast with 6800 vs 6800XT, I think AMD will drop 6800 and possibly even 6900XT. (that's why the $579 peculiar price tag? lol I don't like it at all) Probably 6800 will be $549, competitive with 3070Ti in the same degree as 6800XT vs 3080 regarding performance/$.
And possibly 6900XT to $899, on 10900K w/t Rage, 3080Ti should be +5% vs 6900XT and since 12GB is enough, AMD will have nothing to offer if stays at $999. Of course these are all assumptions, I don't have anything to back this up, maybe I'm overthinking it, I don't know, we will see.