I don't know if anyone noticed, but in the video Armagan said that there would be some sort of stances that you can switch when fighting. So right foot forward is more of an aggressive stance (they didn't say exactly how) whereas left foot forward was a defensive stance.
I think he also said there was another stance, but I'll have to go back to check.
Edit: I misheard the part about a third stance. He also said that there would be some sort of guard system, I didn't quite understand what he was saying but it sounds like blocking from a certain angle at the right time will give a little bit of an edge in combat.