One is still a pretty small sample size; especially when we're seeing the difference between "nothing" and "almost nothing" because the story needed an antagonist that'd draw the Republic's attention so it'd dispatch Jedi to kick off the plot with.
I mean, if the Republic didn't need to rely on military force for "peace" with any degree of frequency in the prior millennium or so, that'd still be "usually enforce peace successfully"...regardless of how unlikely it might seem on the surface.