lolwat? I can't comment on Skyrim or Amalur but Dragon's Dogma had tons of filler, and the few dungeons there were, were hardly well-designed; they were linear, predictable and pretty easy, and the last dungeon was complete crap design-wise, with the same linear rooms and connected corridors. It's the laziest kind of dungeon design there is, to be honest. Compare to, say, Dark Souls, or any classic console action-RPGs, they were honestly complete garbage.
I liked Dragon's Dogma, but it had so many ridiculous flaws that I can't call it great. It was saved by its excellent combat and character progression, but they were honestly the only redeeming values...