Bottom 4 is basically all teams that are eliminated from the tournament. Xerxia is bottom four not because they were bad but because out of all the eliminated teams they were the best.
I don't think It'd be crazy if a play offs team did so bad that they could be placed below Xerxia in this list, I mean, two more teams are going 0-2 anyways, let's see how well they perform regardless of the result
Fnatic IMO. I think they had weakest firepower out of any team this tournament. There wasn't single standout player in Fnatic. Also their chemistry/synergy was way off and their strategic depth was really weak.