It says as big as, and I thought they meant sales wise it needs to be as big as skyrim based off Rages poor in comparison sales - as you say, it's doom, it's popular, anything less is trouble for iD. I thought also that the 'skyrim audience' darksouls want is the more casual audience, as dark souls was hard and offputting, whereas skyrim is as deep as you want it to be. Witcher 3 can do what they want, I don't care for them.
And I'd agree with the publisher, show me the results, not some crap that copies off other stuff as these 'sources' claim it sounds like anyway. Call of doom... honestly, if you're calling it that internally just shoot yourselves.... lol.
...and if you tell that to the kids of today, they wont believe you!