KC isn't a bad team at all though, first seed of group A so its not like FNC had it easy.
Navi also lost against BBL during groups, if they didn't they'd have gotten first seed and went straight to double elim.
The format wasn't even that bad, if NAVI was so good they'd have beaten TH or any opponent they come across.
FNC did beat TH in the end with Leo being sick. So they deserve to go