Pre-injury Amare was a scary player, and he had a little bit of nasty in him from day one. That said, I think Ayton has his own advantages over Amare. He is bigger, he is already under control 95% of the time, he doesn't do stupid stuff, he passes the ball well, he can score in a variety of ways, he is an excellent passer, etc. Amare was never a smart player, he was often out of control, he did plenty of stupid stuff every single game, he was not a very good rebounder, and a terrible defender.
I am amazed by how good Ayton is considering his age. I think a lot of people had unrealistic expectations for Ayton. I swear that people thought he was going to be Amare and Tim Duncan rolled into one player from day one.
Ayton is doing great. He has plenty of things to work on, but he is doing great.