Marcoms is actually okay. I work with the marcoms, I don't see anything technical in their work.
My company has a five person marcoms team, just organise projects after projects. Must be good in communications. I think anyone who read up on marcoms and is a graduate will fit in to the role. The head of marcoms team is business grad, the rest are humanities grads like psychology etc.

Is political science on the same level as philosophy? I doubt so. That's in my opinion. Political Science seems to be on par with econs and psychology. Then i think sociology, philosophy will follow behind.