Beleriphon
Totally Awesome Pirate Brain
What about the agent trying to get to the instigators of the revolt?
If we're comparing them to large scale revolutions like the French Revolution then the actual revolt pulled in members of the army, and had went through several leaders. It also wasn't anywhere near as centralized as the Reign of Terror in Paris makes it out to be, realistically the ability of Paris to control the rest of France was extremely limited and many areas just did their own thing after getting rid of the local aristocracy, or having the locals aristocracy side with the revolutionaries.
Large scale revolutions that are largely internal to a nation tend to take on a life of their own and can't be stopped by killing a few people. The original leadership structure needs to quell it by giving people what they want, demonstrating its not longer necessary to revolt (force can do this, but only if they can effecitvely project force without abandoning another area), or dying.
There were other revolts in the mid to late 19th century, but they tended to be much smaller scale. The Russian Revolution is an abnormality but not unexpected. It wouldn't have worked if the Czar hadn't been such a putz and assumed everybody loved him (spoiler alert: they didn't), and if the army hadn't sided with Bolsheviks. Even then the Russian Revolution turned into the Russian Civil War for another four years with the White and the Red Russians fighting each other. By the end the Reds had managed to get peasants on their side with a bunch of promises of land reforms and promises of food while the Whites basically said, "Commies suck, we're going to go back to the way it was."
What skills can do is tightly constrained by bounded accuracy and realism.
Or rather the way the rules let adventurers interface with the imagined world are constrained. I wouldn't assume the average peasant is going to use numbers or values similar to the way the skill system operates in general.
Anyways, I don't think firearms or magic actually make large scale revolutions any different in the long run since they tend to operate on psychology and promises rather than actual physical violence be successful. Violence is inevitable but its never ultimately what makes them successful. If there is magic on one side, eventually magic will end up on the other its the nature of the beast.