No, no it doesn't...
Kalos league victory-this is the last league episode, and someone has to win the league
Ash's ultimate battle-his skills have reached their climax, and it'll be his best battle yet.
Both, to some degree, we're true. Although some may say Ash vs Sawyer was btter, for him, it was his best
Besides, who's the say that they'll troll us? Ash needed to lose to set up the Flare arc, which should've made up for it, and you can't compare amour to the leagues.
Guys, don't go on about non-topic related stuff! Titles are ambiguous, we get it. Nevertheless, Serena is making a choice. I believe it involves her future both with and without Ash, but we'll have to see.