Cut me some slack

I went 12/2/13 jungling as singed, and got an S-. According q&a about the champion mastery algorithm, I should be judged based on other singed jungles, but who does that?? The only logical explanation for me not getting an S or S+ is that I was compared to people playing singed in a lane, who are able to more easily farm minions which is an unfair comparison. I have been working my butt off to get one more S or S+ for singed mastery 7, but i can only seem to get an S-, rito can i just please have the stupid banner?