Different people have different skills and different ideas on what success means to them. Leave people alone and let them pursue what they want to.

Maybe the one guy sucks at finding apples, but he's great at taking care of chickens and collecting eggs. If you flip out that he's not getting the same number of apples as the other guy, he's going to be a sub-par apple picker, propped up by extra help and special accommodations, and he's not going to find his real talent.