Ranked gradings? is there any logic to it?

So recently iv been playing sej ranked, attempting to get that elusive S or higher on her. is there any impacts on the game that actually define your rank? ill send 2 screen shots 1 of at A- where i perform pretty well. and the other is an S in which i perform alot worse than the A- game. **A- game** https://gyazo.com/8c3989956011779c883d4f806952fdbf **S game **https://gyazo.com/eaa2aa2622fae42cbd37c6264b56f35f any feedback or advice? as of now it feels totally random as to what higher grade you get. and looking at the stats, the A- should definitely be an S. Many thanks
Report as:
Offensive Spam Harassment Incorrect Board