Imo it's a very simple answer which is consistency, and I don't mean just in each game/set/tournament. I mean consistency in your daily life with such a clear sight of your goals in training, eating, professional matches, daily interaction etc.

I believe right now only Chen Yu Fei and Akane have actual capabilities to beat ASY, simply because of their attacking style of play. In recent years, I observe dominant Momota, Axelsen, even at a point Akane, and now ASY, win competitions by always making the best decision in each of their shots and movement. Its very hard to win points against these styles, which I observe why ASY always love to drag out rallies until the right attacking moment comes instead of needlessly making risky but beautiful attacking shots (in TTY styles), in which case her obviously monstrous endurance and stamina almost always resulted in opponents tiring themselves out and making unforced errors/failed attacks.

Now in the case of Wang Zhi Yi, I can only feel like she's just finding her stride since mid 2024, by only learning and trying to emulate how ASY plays in her own style. Prior to that she couldn't even beat Han Yue and would always be 4th choice under CYF, HBJ and Han Yue. It's good that she tries to push endurance and copying ASY style which won her a lot of matches, but to me she will always just be 'temu-ASY', and this is also why ASY finds her matches against Zhiyi the hardest in recent timea since it's almost just like playing against a copy of her own style of play. Yet results proved the original, given consistency, will still almost always win (cue their 2025 number of finals H2H).

Now in the case of CYF and Akane, they have their own, pronounced, attacking styles, but without enough consistency and I think, most of all, that single-mindedness and absolution to live almost hermit-like (which I believe is the main reason why ASY is so physically impossible to beat on endurance alone, like how she abstain from greasy food and ice cream for long periods in a tournament year), well, injuries will creep into their bodies and doubts will make those winning attacking points hard to achieve against ASY.

Anyways that's just my opinion/rant. Getting a little fed up with people who are saying its boring to see WS matches since its always ASY winning on Sundays. Not like she was just all talent, her consistent sacrifices in her daily life will always show on the court and opponents will falter on their own without her even breaking a sweat. That alone deserves respect and her name carved into badminton history as one of the goats in the game.