I said it before the Zombie's fight with Volkanovski and I'll say it again: If your main selling point is an ability to take punishment, you're out of your league against elites.
And unless something dramatic has occurred behind the scenes since mid-April, Holloway remains elite. There's simply nothing the Zombie does that's any better than Holloway does it. In fact, he is faster, more athletic and more dynamic than Zombie (or nearly anyone else at the weight) has ever been.