according to manzone (each number next to the player is how many SC points that player gets per ball)
Intel.
Keeper 0.25
Normal Defender 0.1
Anchor Man 0.12
Normal Midfielder 0.25
Winger 0.1
Forward 0.25
Passing
Keeper 0.1
Normal Defender 0.1
Anchor Man 0.1
Normal Midfielder 0.25
Winger 0.1
Forward 0.05
Shooting
Keeper 0
Normal Defender 0
Anchor Man 0
Normal Midfielder 0
Winger 0
Forward 0.35
Heading
Keeper 0
Normal Defender 0.1
Anchor Man 0.11
Normal Midfielder 0
Winger 0
Forward 0
Ball Control
Keeper 0.25
Normal Defender 0.2
Anchor Man 0.12
Normal Midfielder 0.25
Winger 0.15
Forward 0.15
Tackling
Keeper 0
Normal Defender 0.35
Anchor Man 0.2
Normal Midfielder 0.1
Winger 0
Forward 0
Cross Balls
Keeper 0
Normal Defender 0
Anchor Man 0
Normal Midfielder 0
Winger 0.25
Forward 0
Goalkeeping
Keeper 0.35
Normal Defender 0
Anchor Man 0
Normal Midfielder 0
Winger 0
Forward 0
Speed
Keeper 0
Normal Defender 0.05
Anchor Man 0.15
Normal Midfielder 0.05
Winger 0.2
Forward 0.1
Stamina
Keeper 0
Normal Defender 0.05
Anchor Man 0.15
Normal Midfielder 0.05
Winger 0.15
Forward 0.1
Experience
Keeper 0.05
Normal Defender 0.05
Anchor Man 0.05
Normal Midfielder 0.05
Winger 0.05
Forward 0.05
So by this we can find the order of which attributes are most important. (In Order of Most needed) (attributes in [these] symbolises equally needed). I'm not including Experience.
Striker: Shooting, Play Intelligence, Ball Control, [Speed & Stamina], Passing
Winger: Cross Balls, Speed, [Stamina & Ball Control], [Intelligence & Passing]
Normal Midfielder: [Passing & Intelligence & Ball Control], Tackling, [Speed & Stamina]
Normal Defender: Tackling, Ball Control, [Intelligence & Passing & Heading], [Speed & Stamina]
Anchor Man: Tackling, [Speed & Stamina], [Ball Control & Intelligence], Heading, Passing.
Goalkeeper: Keeping, [Ball Control & Intelligence], Passing
Rami