I decided to follow on through with the 7th ranked wrestlers through the 10th:

Class 6 A had 2 # 7 ranked wrestlers
Class 5 A had 5 # 7 ranked wrestlers
Class 4 A had 4 # 7 ranked wrestlers
Class 321 had 3 # 7 ranked wrestlers

Class 6 A had 2 # 8 ranked wrestlers
Class 5 A had 4 # 8 ranked wrestlers
Class 4 A had 7 # 8 ranked wrestlers
Class 321 had 1 # 8 ranked wrestlers

class 6 A had 6 # 9 ranked wrestlers
Class 5 A had 2 # 9 ranked wrestlers
class 4 A had 2 # 9 ranked wrestlers
Class 321 had 2 # 9 ranked wrestlers

Class 6 A had 3 # 10 ranked wrestlers
Class 5 A had 3 # 10 ranked wrestlers
Class 4 A had 4 # 10 ranked wrestlers
Class 321 had 1 # 10 ranked wrestlers

No doubt about it. 4 A carries the depth.