Role Hierarchy?

If the roles in LoL gameplay were ranked in order of importance in terms of contribution toward achieving an objective, would it look something like this?

1. adc
2. mid
3. top
4. jg
5. sup

What do you guys think?

EDIT: I can see where you guys are going with this. Allow me to modify the list.

1. jungle primary job: provide vision and global information on the enemy. secondary job: gank trouble lanes.

2. support primary job: set up and initiate fights. secondary job: provide vision and local information on the enemy.

3. attack-damage carry primary job: be the main damage-dealer; be fed. secondary job:

4. midlane primary job: provide CC and engage/disengage depending on situation. secondary job: provide magic damage to compliment the adc's physical damage (apc?).

5. toplane [need help with this one]

Feel free to revise.