I say Oblivion.

Oblivion is bigger. Fact.

Pretty much. There's nothing to vote on here.

What is more detailed, I felt that Oblivion had the map right, But they failed on character models

I think Skyrim is a bit way more detailed. I loved Cyrodil and all of it's lush colors, but Skyrim, IMO, has a much more detailed feel. ? I guess.

Actually They both are about the same. Cyrodiil may feel bigger but that's because in Skyrim, there are way more places that let's you see the whole province than in Oblivion. (In Dive Rock, you can see the Imperial City from there..)

I suppose with "Oblivion" we're talking about Cyrodiil and not all of the planes of Oblivion. In that case, Cyrodiil is alot spacier but significantly less mountainous. In terms of how long it would hypotheticly take for you to walk in a straight line from one end to the other, but still following the surface of the ground, I would say those lenghths would be remarkably close to oneanother. But of course you can rarely walk up the mountains, and have to walk around them, which leaves us in the same situation. And also this all depends on from where to where you walk. Their borders aren't exactly circle-shaped.

They feel very similarly sized, to me... but, of course, one cannot cross Skyrim by traveling in a straight line, so it's difficult to say.

They both have the same number of major cities, and those feel bigger in Skyrim than in Oblivion. It feels like it takes longer to get from one end of Whiterun or Solitude to the other than it did to cross, say Chorrel or Cheydinhal... but now that I think of it, Cheydinhal was pretty long. So maybe neither has the advantage there.

I dunno. They feel the same, to me. Why was that not provided as an option?

Oblivion has bigger cities and a bigger world in general. I think the actual landmass is close to the same, but Skyrim has a lot of mountains that you can't really get to the top of, which kind of cramps up the world and makes it feel a bit smaller.