I would say this is true, having played both frequently oblivion is (no pun intended) a warmer game, Skyrim's quests feel rushed even if the radiant quests do add a little life to the world there's no central pillars to hold it up, the companions and collage of Winterhold quests in particular always leave a bad taste in my mouth for how they progress so quickly, in the collage you go on a tour learn a Defense spell which takes 2 seconds and then end up on a field trip which ends up leading to more dungeons and becoming the arch mage,
If it's for learning at least teach the player some decent lessons or something.
Oblivion's music is also warmer, without that music I doubt I would be as much a fan of the series, I didn't take to oblivion until
I was in the middle of nowhere at night with my green candlelight spell and heard a certain track play, the fact the composer Is likely a real creep definitely sours it now though.