Regarding The Marking Scheme After Games

I think riot should do a slight revision, at least in regards to how junglers are rated. They are quite a few times I've carried my team as a jungler, only to get A+ then to see other teammates get S even tho they played a less crucial role in the game and have a lower KDA. People have told me you need a high CS, but lets be realistic, I'm running around the map chasing objectives whether they be kills, towers and dragons. I'm trying to win the game as fast as possible, as a jungler my CS just isn't going to be high unless I'm playing shyvana or we're losing and I need to farm to keep up. Just some food for thought. What are other's opinions on this?