The main argument is not wether or not to start Losman or not. Losman will be the starter, and it is about time that you guys realize that this is a rebuilding year. Things don't come together over night for a team. I have tried to explain this before but nobody wants to listen.
Losman should start the whole season and get his growing pains out of the way now. He didn't get to last year because of the people in Bills nation and now he is one more year away from actually delivering for this team.
So yes, start Losman the whole year and you might want to give him a shot next year as well. He made real strides tonight, but people need to realize that this team is not going anywhere this year. WAKE UP.