cft,
The only persons that it really matters to if your son is obese or not are you and him. As to wrestling, it doesn't matter if he's obese or just big. The question is, who would he wrestle? If both of you would take pride in him winning a state medal for wrestling one match or less over a three week period, then I guess we could create another weight class. That still isn't the definition of competition and doesn't make him a better wrestler.