[JesseK]

I'll separate these out into relevant vs totally non-relevant. Past there, the ranking will be different for each team depending on their strategy. We'll also assume reliability & ability to communicate with their alliance is up there, as those are an 'every year' kind of thing.

Relevant attributes:
Balls Scored
Human Player Balls scored
Empty Cell transported
Traction (gives the ability to push/pin vs other robots)

The rest are irrelevant or are a result of performing something from the list above:
Autonomous Balls Scored (strategy dependent)
Balls in own trailer - this is an iffy one -- it's extremely difficult to control how well your opponents perform, especially with the pinning nature of this game
Balls Shot
Scoring percentage (Balls Scored/Balls Shot)
Human Player Balls Shot
Human Player Scoring percentagae
Speed
Strength
Super Cell Scored
Driving Skill