I suspect Carter gets a lot of coaching attention, but the fact is that Brighton is a small school playing in a weak league in Monroe County. The level of play in his video is nothing like what you see in the video for Zak Allen.
As for "pub", keep in mind that Carter set school records for rushing yards. He may not be known nationally, but he is one of the best 3 prospects in Rochester.
I know it is a tough comparison, but Carter could be something like Mike Williams -- has outstanding size & speed for the position, athletic ability that compares well with anyone we are likely to land, committed early, relatively under-recruited. Ready to play early because he is physically mature. He isn't a "development" project who needs to red-shirt and fill out.