Yes, to compare a team that according to Team Vikings would be the second best team in Brazil (if they competed there) at that time with the team that, according to all of Brazil and even the teams from Iceland/EMEA, was a much worse team than the others.
Team Vikings played out of the finish line and still managed to eliminate the X10 (SEA#1), it's not like the VS wasn't surprised by the PRX (SEA#1) and crushed them completely. They played against Sentinels which is currently the best team in the world, were eliminated by Team Liquid which was quoted as one of the favorites for the title and SEED#1 in EMEA, as well as in Berlin Vivo Keyd lost close matches against Envy, which completely smashed KRU, which completely smashed ZETA. Just like Havan Liberty that faced NA's SEED#2 that overcame the Gambit that is EMEA's SEED#1. If SEA were a bad region, neither we nor Vision Strikers would have a hard time beating them. I'll only consider your "win a series against NA" argument when VS faces Sentinels/Envy/100T, playing against a V1 with a substitute is easier than facing the current world champion, and you'll see that.