At least in recent years, teams that won ascension like BBL and Nongshim have been doing really well, and players picked up from tier 2, such as 3/5 of NRG and verno are incredible as well.
In other games like CS and League I think something like this would never happen, the closest we got to it was Legacy 13-3ing Vitality, but it was just a BO1, and they got destroyed later on. I also can't imagine Gen.G in League losing to a tier 2 team
I think this is more of a recent thing btw, since a lot of early ascension teams were not so good, like 2g in Americas and Apeks in EMEA, although I guess you could argue SLT Seongnam and Envy are not doing so well, but it's hard to talk about Envy when they lost their by far 2 best players



