Team sports always matter more because every player on the roster gets a medal. Exact rules vary between sports, but winning a volleyball tournament = winning 1

Team sports always matter more because every player on the roster gets a medal. Exact rules vary between sports, but winning a volleyball tournament = winning 12 gold medals, not just one. That's what makes it a top tier sport. There are even more fringe ones which aren't particularly important under any other circumstances, but matter a lot in the Olympics: water polo (13 players), field hockey (16 players), synchronised swimming (8-10 players) etc.