Sure but the majority of games are actually forcing TAA as far as I know. Can't even turn it off. Native without TAA would still look worse than dlss for different reasons, jaggies.
It's tough to nail down as it's a moving target in that TAA and DLSS implementation quality varies, sometimes heavily, game to game.
Broadly, I'd rank them in this order, noting it's not a linear scale just rank
What that makes clear to me is that per pixel actually being rendered and what the AA algorithm has to work with, it's obvious that the DLAA/DLSS algorithm gives better image quality than most "off-the-shelf" TAA that comes in a given game these days. This could be shifting however, as I see games starting to ship with say DLSS, FSR and XeSS and no off-the-shelf TAA at all, as any card capable of running the game will be able to use at least 1 if not 2 or all of those solutions, and sometimes offering those solutions at native resolution too which is fantastic to see. IMO FSR @ Native is on par or better than TAA @ Native too, certainly sharper but other potential drawbacks like shimmer or disocclusion artefacts, so it makes more sense to just include the modern algorithms rather than some off the developer shelf TAA. More options are welcome though and off-the-shelf TAA if it's super easy to include might as well be there I suppose.
No matter how you view Native, whether it's native res+TAA, no AA, DLAA, MSAA etc, pushing the render resolution beyond native
and using a like for like AA (or none) will provide better IQ than native res - by far the largest and most relevant issue with it would have to be the rendering power required to achieve worthwhile results. I do enjoy playing older games on newer hardware and supersampling the bejesus out of them
Or my owned and emulated switch games on Yuzu.
Perhaps an interesting thought to leave here on that note... When we know that there is a method (supersampling) to increase perceived quality beyond what can be achieved by rendering at a given displays native resolution, it would seem reasonable to assume that there isn't necessarily a limitation of only that one way to achieve it.