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.
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Crotas end can be soloed by a warlock. I'm doing a death singer/crota solo run atm. Deathsinger is at half health now when I die and I think I'll do it this week. I already know how I'll beat crota. A warlock can solo the first part easily and at the totems he just die, self res and snipe ogre.