SA is the same in SEA. I think WEU is worthy to have more slots because they have most of the team that is dominating the Dota2 scene. The competition on that region is very tough that is why they developed a very strong gameplay which other region can’t beat during majors tournament. SEA is indeed a thrash since the quality of Dota is already decreased because we can’t use the meta properly.
Their remaining games is match against Exe and LGD that both struggling. They can secure an upper bracket position if they will manage to tie or win all those remaining games. Liquid can still have a come back here because those 3 remaining games for them is very manageable to sweep.