Even Skyrims storyline was pathetic compared to Oblivion. But maybe the "special" thing with Oblivion is the inclusion of the gates, which vastly varied the world and it was an extreme polar opposite to Cyrodil, which kept things going and varied the game. Skyrim doesnt have that sort of polar opposite in the game, it's all set in snow, with snowy dungeons that look the same. Maybe that's the issue. Morrowind was hugely varied, oblivon had...well oblivion, and Skryim..the entire world looks the same. (besides certain cities varied architecture here and there).
I think I just pinpointed the reason this game didn't click. It's bland in itself, so the rest of the blandness adds to it. (Which would explain why i enjoyed fallout 3 more, it had many varied environments, although the sewers were all samey but they were generally short and not frequently quested in as much as the Nordic ruins of skyrim).
How is Skyrim not varied? Because it had mountains? So did Morrowind and especially Cyrodill, fyi. Their's just svcked compared to Skyrim's. Skyrim has tundra, craggy mountains, forests w/ snow, forests with no snow, autumn forests and plains. Morrowind has ashlands, swamps and islands/coast w/ big mushrooms. Cyrodiil had forests, snowy.. uh.. hills/mountains near Bruma. Forests.. rainy forests in the south.. forests. Oh and the gold coast. Deadlands too I guess.. but Oblivion gates were nothing but a pain in the ass, not some awesome new realm to explore. Big tower, with lava and daedra. Oh man, that just totally "wows" me! So much better than fighting a dragon on the top of massive mountain, overlooking the rest of Skyrim.
How is Oblivion's main quest so good compared to Skyrim? One could even say that the Civil War is part of the main quest.. so with that, I especially don't see how Oblivion's was so much better. Oblivion is awesome and it's main quest is fine.. but I don't see how it's much better. Find Martin, get him some stuff, kill some cultists, shut down some gates, show down a big gate, go to a paradise, kill a dude, watch Martin be a hero. Skyrim is basically kill an attacking dragon, meet the greybeards, learn whats up, find blades people, go to a party, find a wall/temple, find elder scroll, fight alduin, hold peace council, choose between blades/greybeards, capture dragon, go to sovngarde and kill alduin.
Both could have been better.. but I don't think Oblivion blows Skyrim out of the water by any means.