As Shyv 18 kills, Secured 4 dragons + elder + baron, most wards cleared and bought...
... and only A Rank.
Rito Pls. If I have 18 kills (as opposed to the 8 deaths that happened when I had to take one for the team) and cleared literally every single relevant objective. Then maybe, just maybe, that's worth an S rank, no? At least an S- right?
I do not understand this system at times...