Dragon Age:Inquisition VS Mass Effect:Andromeda - which one did open-world better?

MEA easily, DAI's open world was a horrible empty grindy mess whereas MEA's felt alive.
Also the nomad worked so much better than the mount system for traversing the spaces.

Both are terrible.

But MEA gets my vote simply because the nomad was a better transportation system than the mounts and, unlike DA:I, the banter bug is fixed for me in MEA. So that makes exploring less painful I guess.

Well, I don't think this poll have any sense.
Of course MEA got it done much better - BW learn a bit from DAI mistakes - we have Nomad, and we don't have to look for some silly mosaic's, 10 wolf skins or 20 minerals every 5 minutes... but both are terrible in some ways: you are spending hours on those maps, finding a lot of quests - but - those quests are usually very boring, not related to main story AT ALL, Remnant places exactly the same - 1 box, 1 broken console, couple of enemies - that's it. And all those maps are so empty...

DAI +1

ME:A, absolutely. he planetary story, lots of voiced dialogue for side quest, and the way more manageable scope of the maps, the companions that comment and banter all the time, rather than stay silent for hours, and their comments are planet-dependent. And the Vaults are really, really awesome! The jump-jets and Nomad's upgrades are also VERY noticeable, and help a great deal to keep the getting around entertaining. Finally, no lockouts on parts of the areas from the War Table that are a part of some mysterious trigger (drove me bonkers). Also love ME:A landscape art far more, so there is that too.

MEA, but it's still pretty bad imo - it was decent at the very beginning of Eos and then very fast declined to near DAI levels of bad - why can't they make far fewer quests, and maybe smaller worlds, but instead make a few more epic af quest series that, potentially, can actually "shape the world", or make for an exciting story in itself, and, if we go really crazy, maybe even have some meaningful impact on the main story line?

I still think it should be possible to "lose" the game, with wrong/stupid choices and not doing anything other than main mission, like you could in ME2 if you were the worst player ever, or wanted to simply try being the worst possible Shepard.

It shouldn't be that hard, with the amount of resources that was available.

While it wasn't amazing exploration, it was still actually enjoyable from time to time in Andromeda. I at least felt a sense of purpose in what I was doing there. My character came to a new galaxy to explore and that's what they are going to do. Finding a path for the milky way species is in the job title. The mystery of what is out there or the feeling of knowing you are the first human to do _____ here is an appealing aspect of the game (and something you'd hope to see in a sci-fi game about traveling somewhere completely new.) I can't say running and around and getting my boots dusty in Inquisition had the same impact.

In Inquisition it was a slog with a whole lot of maps that had zero relevance to the plot or anything of significance and felt like the design intent was to simply just stretch your playtime and pad the game with "content." When I got to the large night time desert (after having finished every other) I took one look around at that giant sandbox and just said "nah, I'm good" and abandoned it completely...on my first playthrough no less. I was obsessed with Bioware games at that point so the thought that they would have persuaded me to just not even bother finishing...no starting...an entire map was crazy to me. So little time in that game was spent on the core story, the rest of it was spent with me running around wondering what am I doing and why should I care.

DAI because it has less open world in it

Tough to compare the two;
DA:I had a huge playbook to draw from.
ME:A had to be somewhat original

For all my criticism of MEA and the fact that I enjoyed DAI more than MEA overall, MEA did open world much better than DAI.

DAI easily wins the writing contest though...

Fully agree.  Needed an option for neither.  I think I would rather have the banter bug back though.  That way I wouldn't have to listen to the often times cringe worthy banter.  I actually turned on the subtitles and turned off sound depending on who I had with me.  Listened to music instead.

If I had to pick a winner, it would be DAI and that is only for story, which is the only reason I buy Bioware games.