I have a friend named Andres James. He is the son of the Cano's coach Cano when he was about 15 years.
Andres was the best player in the league, much much better than Robinson Cano. A team offered him a record of 3 million dollars and his father refused to sign. The father demanded between 5 to 6 millions.
In the end Andres James signed for only 200 thousand dollars and suxx at beisbol------> http://www.fangraphs.com/statss.aspx?playerid=sa328845&position=SS
The point is ..... no matter how good you are at 16 years. You must develop your skills before called you "a good player MLB"
I know Vladi Jr very well. I saw him tons of time in BP and in couple of games. He's a raw raw guy with a lot of pop, but he's just a kid. He needs to develop his skills before make a value judgment about him. I've seen a lot of 16 years old guys fail.