Return to Dream Land is actually quite a bit easier than Epic Yarn (to achieve the central goal of the game or to 100%), and yet people think Epic Yarn was easier because when you fall in a hole or get whacked by a no-doubt near-motionless baddie, you don't get a black screen and a decrementing number.
The thing that really, really kills me about RTDL--and this is not a gameplay complaint, it's a presentation complaint--is those hideous Saturday Morning TV CG sequences in Return to Dream Land, that unfold silently, with no voice acting, encoded poorly, and surrounded by thick static borders. The game doesn't come anywhere near filling up the disc, so they don't even have that excuse. Epic Yarn, by contrast, had an engaging and vibrant storybook presentation with a narrator that evoked, say, Winnie the Pooh.