I am not sure why you would need "narrative" mechanics for that. There are lots of solutions to the design problem. One of the easiest is to give the non-Jedi more drama points/bennies/luck/whatever. Buffy did this and it worked great.A game that wants to mimic that would need to allow "narrative" abilities for a lower tier character to beat a higher tier character. There must be some mechanic where you can can narrative powers to turn a Sith apprentice against their Sith master to your benefit, or to recruit an army of soldiers that can work together to overcome a Jedi Master. And it might need to allow a path to augment yourself to that level, too.

