Current Champion Masteries suck.

So- after an epic win in a ranked game I am left to believe that the mastery system thats currently set up sucks. I never really payed to much attention to it but when I had one of the best games I've ever played be judged as it was I felt the need to come here and complain. So essentially as the ADC your expected to cs, and more so than others I suppose. Under the current mastery system, CS is taken way too harshly into account though. There is no room for the system to account for landslide games where csing isn't done as much because the teamfighting never stops. I finished my game with a KDA of 18/0/13, with highest damage delt (36k) I had 150 cs, and highest gold earnings at 15.5k. After this flawless game (other then stepping out of lane constantly to get kills) I had received an A+ for the game. Both the Shen and Amumus on my team had gotten S+'s for their games 3/3/16 and 10/1/14 respectively. Both of them were slightly ahead in CS from me due to my hovering over midlane, but in the end for Shens 40 cs lead, I was apart of 12 more kills than him. I was apart of several more dragons than him, as well as baron. Im not really sure what this game takes into account for mastery but if 18/0/13 as a squishy ass ADC with no dash isn't an S than I dont know what deserves it. I have more damage delt than any two team mates combined (I even have more than the jungle, support, and top combined but they aren't damage dealers so its expected. Just kind of bumbs me out that I literally gave up 0 deaths and had so many kills, took so many objectives, and still was neglected to even receive an S- for it.

Apparently having low cs in exchange for mountains of kills means nothing to their system, especially if you top it all off with the 0 deaths.

Wont let me post an image of it :/