I have personally never seen a report that has a higher rating than one in commitment, but I'm sure they must exist. I think most people get one or below that. If you think about it, wouldn't a commitment higher than one be dangerous or unhealthy? Even if you did a report with yourself I don't think you would get a higher result than 1. There are plenty of unsuccessful relationships between people, a higher commitment than that in a wrong kind of relationship might be tragic.