You obviously know nothing about the tournament.
"They had group with VP, nV and mouz (last two were absolute garbage at that time) and were 2nd in group after VP."
Other than the group of death (Faze, Fnatic, G2, SK) there weren't any other tough groups. The other two groups had some absolute garbage teams, also. Group A had Astralis with their coach, and 3 teams that were on the same level as Mouz and Envyus. Group B had " Na'Vi who were 1 step to disband at that moment.", Flipsid3, and two teams that lost to fucking Flipsid3.
The teams in the playoffs were Na'Vi, Gambit, Liquid, Fnatic, Flipsid3, VP, SK, and Astralis. Liquid played against:
-Fnatic - yes they eventually disbanded, but they also went on to get 2nd at Eleague Season 1
-Na'Vi - Na'Vi was not a great team, but for a quarterfinal matchup, they were pretty average
-SK - the best team in the tournament
Liquid didn't play:
-Flipsid3 - the shittiest team in the playoffs, what a fucking joke
-Astralis - without dupreeh and with BOT zonic, and Astralis was only in the playoffs because they beat fucking Dignitas 16-14
-Gambit - a fucking joke, got dad-dicked 16-3 and 16-5 by fnatic in the quarterfinals
-VP - VP was a good team, but Liquid already played in the group stage, so they couldn't play against VP until the finals
So yeah they got destroyed in the finals, but Liquid had an average or harder than average run at Cologne 2016.
I agree that the old GSL system had flaws. but when you use bad examples, it makes your argument worse.