That list is mostly preferences, not facts. A few are, but most of what you listed is subjective or not even really comparable because different universes.
Different universes does not excuse bad writing or poor storytelling or badly designed cities or shoulder glues or DRM or expensive DLCs or an incomplete story (DAI essentially finishes on a cliffhanger and you have to get a paid DLC to complete the story)
Sounds like there's a lot of fanboy/girl-ing and butthurt going on here.
A lot of what you've said can't be accurately measured in terms of quality, and comes down to personal preference/favouritism.
Novigrad is bigger than Val Royeaux. That is measurable.
TW3 had more free DLCs than DAI. You can count that.
TW3 have better hair than DAI. You can observe that.
TW3 have more diversity in character height and weight compared to DAI. You can see that.
TW3's paid DLCs are cheaper than DAI's paid DLCs. You can observe this.
TW3's paid DLCs offer more content and more quests compared to DAI's paid DLCs. You can count and observe this.
TW3 does actually allow the player to experience what it is like to be a Witcher. Once again, you can see this. On the other hand DAI, fails at allowing the player to experience what it is like to be the Inquisitor due to the pointless offline MMO style quests. Once again, you can observe this.
Ciri is a stronger and more powerful female than any female protagonist we have had so far. Yennefer is stronger and more powerful than Morrigan. You can observe the difference is power levels.
TW3's Elves do not look like they have had their shoulders glued together and they do not look like they have an oversized head on top of a skinny body, which anatomically does not make sense. You can observe this.
TW3's Gwent is playable whereas DAI's Wicked Grace is not. You can see this, its not objective.
TW3's horses steer better and you can have banters on horseback. DAI's mounts steer awfully by comparison and party banter is disabled on horseback. This can be objectively observed.
TW3 is open world and DAI is not. Therefore, TW3 having more content than DAI is a fact, not an opinion.
TW3 explicitly shows the social issues that is plaguing the Witcher world in all its dark and grittiness. DAI does not do this and instead resorts to implied text references, which is a shame because DA was willing to be dark and gritty once with Broodmothers and what have you. You can objectively observe this.
Like I said, I can keep going but objectively, TW3 makes DAI look like a joke. Poland > Canada when it comes to RPG video games.