Snowball wanted that every animal on the farm be treated the same, no matter the size, or what type they were. He exectued his plans in a way that every animal did their own share of work, and were rewarded for doing such. Napoleon also had this same idea, but was eventually corrupted with the luxuries of the house. Napoleon eventually started to work the animals just like the farmer had done. This reflects their differing goals because it shows the true nature of each character - Snowball, the ready leader. And Napoleon, the corrupted ruler who eventually turned on what was once his views.
For #2, he reacted that way because it's his view and he says "after all the stuff she said about you?"
