South Park: The Stick of Truth: Side-scrolling?

I just watched the E3 trailer for the new South Park game, and I couldn't help but notice the gameplay seems to be a side-scroller. All else looks pretty awesome, but how can they manage to make an RPG this? I don't even see how that's possible. Can anybody confirm that there was gameplay in the trailer (nay...) or it wasn't (yay!)