You're right, its not only about winning events, but Astralis hasn't competed in too many tournaments this year and the only ones they've won so far are EPL season 12 and RtR. Device also hasn't played at his peak, besides in the recent EPL season 12 games. Still not saying he is a bad player tho, very consistent, but hasn't played at his peak on an individual level.
But on the other hand syrsoN won a couple of events with BIG and had crazy performance during those events. He has slowed down a bit recently, but he played really really good at that time.
blameF also has had great performance individually and they even won that one Blast event a while ago + some top tier finishes in recent tournaments.
And then there is ropz who has played really consistent and really well despite his team playing really badly.