One is a stud, 2 have to prove it over a period of time. Polanco has as much potential as anybody but he's only been in the majors for a couple of weeks
Its not just wheels, he will become a stud at defense, elite base runner, hit for average power. He's essentially a right handed version of those with a weaker arm. Except he has power potential.
Edit: Gose not those, autocorrect