I will go with Bernal's assessment, as he was there, and on 15, Del Toro looked extremely good. He gains time, he has time to give. Instead, he has less time to give. Also, Ayuso should have been there to chase attacks in the end. I'm thinking of the Gee attack that caused Del Toro to have to respond, while Ayuso was sitting on his wheel.
I am not saying that he would have won the Giro there, I'm saying he has a minute more to lose now if he'd gone with Bernal.
And yes, Ayuso is acidic on team dynamics, becasue the only person's name he remembers is Ayuso.