One region being competitive doesn't mean anything if the teams that got top seeds through this competitiveness still lose to PRX in international games. With Jinggg on the team, PRX won against KRÜ, NRG, Loud and even EG once during the international events this year, so I feel they are just better than America teams in general.
With all that said, Sentinel's new team looks good this off season, and it looks like PRX's firepower is gonna hurt with Jinggg gone, unless they manage to fit Monyet into the W gaming system.