I will take Giannis. 3.5 years age difference is huge. We are already saying they are comparable players, outside of their jumper. If that is the only thing that is separating these two guys, and Giannis is still developing after just turning 22, I am taking the younger guy with proven talent and the ability to continue to grow.
Leonard is fortunate that he is being coached by one of the greatest minds in basketball. He plays within Pop's system and doesn't stray. I want to see where he can take the team without Duncan, before crowning him. I respect his game, and he is a strong 2 way player, but so is Giannis. Giannis has the ability to guard all 5 positions and offensively he can play 3 positions.