I am not saying your point is wrong, i am just pointing that your argumentation is bad
I believe your mistaking having a harder path with being a better team, even if you dont win against a team you still played against them and that match makes part of the team's path
also the guy said that group D was harder than group B, the argument that you tried to use to disprove that was that both liquid and navi were grouped without any signficant wins in this tournament, which not necessarily means they are bad(even though i think they are) or worse than other teams that played in different groups