He might be the better player, but there's just not enough evidence to suggest that he actually is. (Even if his stats prove his a better shooter from 20 feet out.)
Even if he is, I don't see Sato coming over for a role where he sees 10-15 minutes every other game tops.
He said this in regards of him possibly coming to the NBA this summer,“Mi nutes and my role on a team are my main objective. I want to be on the court to contribute. Here in Europe I have a chance to play and improve my game every day. I'm looking for the same thing in the league.”
And his agent saying, “Romain has always wanted to play in the NBA,” his agent Sam Goldfeder told us. For him the issue is playing. He is not interested to come to the NBA to sit.”
Meaning he wants a similar type of role that he had in the Euro and Italian league. Which is around 25-27 minutes a game give or take.
I don't see him playing anywhere close to that on the Spurs being an undersized two guard. Especially with our main foundation and rotation in the back court pretty much set with Parker,Hill, Manu and Jefferson.