Morgan Spurlock and Michael Moore are both famous for making documentaries about social issues.
Moore's best known work includes Fahrenheit 9/11 (about the Bush Administration's exploitation of 9/11) and Sicko (about the medical industry).
Spurlock is best known for Super Size Me (he eats nothing but McDonalds for 30 days).
Judging by these documentaries, what can we tell about the personal character of these men? (We can tell a lot about the quality of a person's heart by the way they get things done.)
It would seem that Spurlock is driven by better motivations than Moore. Spurlock's goal is to address public well-being while Moore is little more than a sensationalist. Spurlock draws attention to the issue at hand while Moore draws attention to himself. Spurlock inspires people to think for themselves while Moore wants more people to think like him.
This matters because the genuine character of these men will affect their viewers. Spurlock has a healthier outlook on life, therefore his work promotes a similarly healthy outlook. Michael Moore's message is tainted by his own frustrations and bitterness, so he can't help but promote bitterness in the people that follow him.