I mean 100t is a weird team though, because they locked their roster late, played in a hard group in kickoff, and then only lost to SEN. Obviously, they haven't beaten a really good team, but my belief in 100t is about the same as people calling NRG a superteam when they only beat Furia.
In the end, the only team in Americas that's really proven themselves with their current roster, is SEN. Besides, there is no objective way to rank teams anyway, to be honest.