Arriola has ran so much he is not going to be able to go 90, neither will Morris. Its a function of the way the midfield is being overrun, we have to do better and not force our wide players to defend in the box in the middle.
Pulisic makes the tough part look easy and the easy part look tough. So often at the end of a mazy dribble run would have been better off making a simple square or switch.
Different kinds of dribbler, though. Donovan would have been pushed off the ball on that run. Donovan was faster and had better acceleration, Pulisic is a more technical dribbler and doesn't get pushed off the ball as easily.
He's going to stay in New York for his whole career. He's 26 already, 27 in October, and signed a TAM extension this winter. He's good enough to play in a better league, but I don't see him doing it.