My thoughts:

103,112, 215, 275 are weaker than 125-189. Typically the toughest weight are near the middle; ie 145 and 152. This is simply due to the quantity of wrestlers being of average size.

It is tough to win state at any weight level, however 215 6a (and 5a, 4a, 321a) practically "guarantees" a medal to any individual with a winning record.

Bigger schools will almost always win team sports due to sheer numbers.

I believe smaller schools have more individual sport heros because they don't have anybody else to play with.

Its hard to play a game of bball when your nearest neighbor is 10 miles down the road.....there's nothing left to do but wrestle the goats, pigs, chickens, cows, etc.