^ I thought about that, and I wonder if they meant for it to be implied that it was given to him by Mufasa - "I wouldn't dream of challenging you... again..."

None the less, yeah, in the TLG storyline, the scar surely seems to be more than just a scar and more like a curse *nods* I'm even more intrigued by this trailer in any case Hoping there will be more actual explanations in the episode.