A concussion would be worse for the kid. This will heal in time, concussions really don't.
Concussions can and do heal fully.
All leading research indicates that a person can and will fully heal from a single concussion. Further, if allowed to completely heal, a person is not at any higher risk of getting another concussion than anyone else who has never had a concussion. The major danger is when a player sustains a concussion, returns to play prior to fully healing, then sustains another concussion. This is the reason we are all seeing a much higher emphasis being placed on having spotters at college and pro games to try to identify more quickly anyone who may have sustained a head injury, and why players immediately are subjected to tests on the sidelines by doctors and/or athletic trainers fully trained in recognizing and diagnosing concussions. The sooner a player can be diagnosed, the less chance that player has of re-entering a game and sustaining further injury to an already traumatized brain.
The best way to combat concussions and neck injuries is to avoid them. Russell clearly led with the crown of his helmet when running the ball, which is preached against by every coach across the county. "Keep your head up!" He found out in an unfortunate way one of the main reasons coaches preach that...