Is this true?
I can't say for sure if it is true or not, but put a gun to my head and ask me to choose, I'm taking the team with 12 ENTH on a Normal. Because if you keep TIE'ing (assuming you have a Cup match) the ENTH can get to 13 or 14, right? Of course, when it's game time, it will drop back down to 12.
The point is you can't have Enth. >= 12 for a match, but the scale extends to 15, why?
Maybe the idea would be to show how much ENTH at the current time. If this isn't the reason, then idk.