they are different for each team in the league
Yeah, just the number will be different, and the original rankings before scouting. So, if he was originally showing as 2 balls before you scouted him, he could have originally been showing as 5 balls before scouting for someone else in your league. However, once he is scouted, he will be the same in skill and potential for both of you.
I have no idea if our "word on the street" ratings will be the same or not.