You're right. The only line I would use to rate the horse is the 2nd line back. However, as you can see below, there are three contenders. Of these, the 5 is the earliest horse. The 5 can't fight. If I don't have the power lines for confirmation, the 2 looks like an early horse that can't fight. If he can run from off the lead, he looks like he'll fit between the 5 and 6.
Tim