OK, so, I would think that this one had already been trope'd, but for some reason, I can't find it anywhere. I searched pretty hard around relevant pages and whatnot, but only to find ignominious failure.
You know that thing where someone's political status (or simply importance to the plot) provides them with combat power? Present all the way from Greek Myth (*kaff* Hector *kaff*) to Shakespeare (I started looking for this after reading "Richard III,") to all sorts of modern-day stuff. It basically means that someone's status as a ruler/noble/main character allows them to blow past "commoners" even if fighting is those commoners' profession and there's really no reason why the "important" character should be so much better than them.
Similar to, but distinct from, Authority=Asskicking.