Turner is a better dribbler, passer, and rebounder (sad). Green's probably better at whatever's left.
You mean sad for Jeff Green? Or sad for Turner because Jeff Green's a bad rebounder?
I believe Turner's actually more than above average at rebounding. A very good rebounder iirc.
As for "whatever's left", shooting and defense are pretty important. JG does those better.
I'm not a big Jeff Green fan at all. But given Turner's recent track record I wouldn't be so sure Turner's definitely the better player at this point (which seems to be what you're implying).
Turner's problem has been his shooting. From what I've read, he's been terrible off the ball since he can't shoot and lukewarm on the ball. Again, from what I've read, he's an inefficient volume scorer and not a great assist-man on the ball.
That said, I'm very excited for Turner. On a talent thirsty team, Turner is an interesting addition being a young, former 2nd overall pick.