I honestly feel the VoG was much harder to figure out how it worked. Crotas end is harder now because they introduced artificial difficulty, 32s on a level 30 strike, really? That's basically saying you weren't creative enough to implement challenging ideas that didn't rely on much higher output by enemies.
I do love both, don't get me wrong.
-
I went with Crotas End. I believe teamwork is a mechanic which underpinns it's very success. The ridiculousness requires you to have an impecible team, all of which are on point throughout. I enjoyed VOG more, however this wasn't your question.