Except Malz was absolutely a sleeper pick. This is a champion who had a ~40% presence across the entire year of 2017. And yet at Worlds, it was really only there because of Crown. Of the 10 Malzahar picks at Worlds, 6 of them were Crown. Everyone else had ditched it.
Xiaohu didn't play it until after Crown did. Caps is the only other player who played the champion at Worlds that year In fact, in the entire playoff bo5 between the only other two Malzahar players, it was picked once and never banned. The only other two players to play the champion didn't even care. This is a champion that disappeared from pro play and Crown is the one who brought it back. It was not in consideration for basically any other mid laner and yet was a championship-winning pick.
Malzahar even went on to remain a relative pro staple with 20% presence across the entire next year.
Malzahar was a completely under the radar OP mid laner at Worlds 2017.
And there was no way to know whether SSG had simply risen to the occasion on that one day vs. LZ, if LZ simply choked (most people's take), or if they magically went super saiyan out of nowhere. SKT had just beaten the team that SSG lost 0-2 to in the group stage. There was really no reason to think SSG was suddenly the best team in the world.
Or tell me, did you also think that Team Liquid was obviously going to beat G2 at the MSI finals? Because that road is basically identical. "Wow, this team barely limped into their current position. Wow that was an incredible upset win against the pre-tournament favorites. OK, well they're definitely the #1 team now." Or you know, the rational mind says, "Yeah that was a sick upset, GJ getting to finals."