Rogue-related annoyances aside, many quests (at least in Act 2) have been just challenging enough on Nightmare difficulty to require actual effort on part of the player while still not being unnecessarily protracted or tiresome. The game thus hits a nice sweet spot as far as the difficulty curve is concerned, and returning to DA2 has probably already provided more hours of absorbing combat-oriented gameplay than any other title so far during 2014 (possibly with the exception of good old Diablo III, but that's a very different kind of experience).
Currently, Demiath has 11,563 views for Dragon Age II across 38 videos. There's close to 9 hours worth of content for Dragon Age II published on his channel, roughly 1.43% of the content that Demiath has uploaded to YouTube.