I'm not sure you can say that Ben and Widmore are bad guys. Not until we know what their ultimate goal is. They both are working for their own end, neither of which are particularly evil in their own right. They both kill in order to make their plans happen but which one should morally win out? We really don't know who's side to align with except to say that the plane survivors seem the most clueless therefore making them innocent.

__________________
"I saw a guy lying there with an ankle holster. So I took the gun. Thought it might come in handy. And guess what? I just shot a bear!"