qualifiers are all lower-tier teams, i don't think they've ever done well in any past TI. this is essentially meaningless.
Yeah, I think going forward with the new Majors system they will be more important, but so far they seem to just be used to fill in spots since a 11 team tournament would look silly . To date I think the most successful qualifier team was actually TI4's Liquid, who came in 9th/10th (TI3's LGD did pretty well, they were 4th in their bracket but got the 9th-12th placing).
I still like how in the 3 TI's MUFC were invited to, they won only a single game.
Edit: Wait, LGD was a qualifier team last year? Yeah, they did well, so there is one qualifier team who legitimately did well in the main event.