Since Hill was charged with Simple battery that leads me to believe the unknown suspect was the one who knocked the guy out and will be charged with 2nd degree battery.
What's the difference in Hill laying out this guy and Mettenberger laying out Simon? Nothing. And, Alcohol, I'm serious, alcohol does nothing good for these guys.
Just a little perspective here: When I was in college 25 years ago, I never went to a bar on a Friday or Saturday night when there wasn't a fight between a couple of guys. Testosterone tends to make young males really, really stupid--and they fight. Big freakin' deal--in today's social media age, when people are constantly taking video of everyone, you can't even have a college bar fight without a federal case being made.
You know if these kids were just getting high instead of drinking they wouldn't be fighting. Nobody ever fights when they are stoned, they get too mellow.