And you seriously think Cynthia won't be able to adapt to Ash? An a million times better and harder than him? Unless, of course, he goes an channels DP Ash and actually uses his head instead of depending on unga bunga go through the opponent moves just because five times in the same match.
The whole point of Ash's battle style is that one can't really adapt to his style or go in fully prepared to face him.
We need to stop putting Cynthia on a pedestal over and over. Yes, she was one of the strongest trainers in the franchise and she still is. Pre-Journey's she was light years above Ash however now, they decided to write Ash to be better. That's simply a fact.
You're making it seem like Ash's win over Cynthia was dumb luck or like one of his Kanto Badges where he was handed the win for being a Good Samaritan.
Watch the match again. Yes Cynthia started strong with the headstart. However, from the second Pikachu was on the field; Ash was the one who mostly dominated.
> Cynthia tries using Gastrodon to nullify Pikachu's attacks -> It failed.
> Cynthia tries using Spiritomb again (It Fails) -> So she has no choice but to rely on a Destiny Bond Trap.
> Cynthia sets up (Stealth Rocks)
> Cynthia tries switching things up with Roserade and also gets the poison on Dracovish (It Fails)
> Cynthia tried finishing off Dracovish with Milotic like she did against Iris (However, the already weakened Dracovish that took hits from Garchomp, Roserade and was poisoned' was still able to knock out Milotic)
> Ash clears out the Stealth Rock rendering it useless and also takes out Milotic.
> Cynthia sends Garchomp out likely in hopes of taking out Sirfetch'd easily and have both Garchomp and Togekiss in Good health for Lucario. However, Garchomp ends up taking far more damage than she wanted.
> Cynthia tries to Max Airstream + Speed Flinch hacks with Togekiss; however it ended up failing.
> Cynthia tried to use G-Max to wear out Lucario and have it essentially fight 2 consecutively powerful pokemon instead of 1 (Also probably in hopes of trying to be unpredictable to surprise Ash) -> It still fails.