LogFAQs > #969800817

That's why Ash isn't the world's strongest trainer. He won a global tournament but with Paul and Tobias and other such trainers not even entering, it isn't a definitive "absolute best of the world" type accomplishment. Plus with how the show basically ignores that Ash won the Alola League tournament and special battle with a former conference winner (Kukui) outside of episodes where they visit Alola, well... Don't expect them to care much about it besides acknowledging at times for the sake of continuity and little more.