The mechanics are easy. You just need experience.
This nails it. You just need to play enough to understand how its done, then it becomes as easy as those are claiming it to be. Why would you even want it to be easy? Doesn't it feel better when you accomplish something after you struggle for a bit? I actually still haven't finished it, but each time I play I get closer to finishing (just barely missed it last night). I guarantee when I finally get it done, I will feel better than I would have breezing through it easily.