I agree with both of you wholeheartedly on this subject and also believe that proper nutrition and exercise is key to maintaining a good "natural weight" for kids. Also, it needs to be said that most kids go through what can be referred to as a cyclical growth spurt every spring. We experienced this right before state qualifying with our youngest, who had been wrestling at a certain weight class most of the year with no problems making weight at weigh ins. Then spring started to come and he hit that growth spurt so we had to move him up a weight class. Now 3 pounds isn't very much but as you say 3 pounds on a 60 lb little body is right at 5% and that is a bit too much when the kid has little to no body fat in the first place. So we made the decision to bump him up a weight class.

With our oldest son he entered wrestling for his firt year right at 96 lbs. He has a sturdy frame but was a bit overweight and with the proper nutrition program and the hard work in the wrestling room over the season he had dropped down naturally to 82 lbs. (poor kids is built like myself and will always have that "husky" look to him even if and when he is at little to no body fat)
Moreover, I was just trying to make the point that with the proper nutrition and exercise, different kids respond differently and I believe that "cutting" weight should ONLY be done naturally (like in the 2nd example) and not to combat the evils of that springtime growth spurt.