Well first thing I want to address, is that the indicator isn't used for people to get competitive over. If you have 50 reports with 50% accuracy, that is still highly appreciated. Getting your score as high as possible isn't a huge concern.
I didn't mean to start this topic as a competition about the metric. My concern is that I'm being shown that sometimes I'm innaccurate, but I can't really tell which of my reports were the innaccurate ones. That seems a little broken. Why tell me at all if I can't use the information to improve?
I cannot have resisted to post a Mine is bigger than yours picture; however, I mostly agree with the point that knowing what reports are goods or bads could help people reach a better understanding of the meaning of the forum rules. However, this is still doable without any further Admin intervention, simply by partecipating in initiatives like Muhammed Zakir's Help the forum and earn Bitcoins! initiative by looking what post have not been deleted. I have to credit it to allowing me to better grasp forum rules meanings & recovering my reports' accuracy rates after a dozen of bad reports, in my newbie days of course.