It's killer, cuz the biggest reason Mclaren and Mercedes improved so much is that they've drastically improved their front end turn-in behavior. Usually having that kind of transformation in behavior would have required a whole chassis rethink as a compromise, but these teams have achieved these radical improvements in performance without any other compromises.
Cant stress enough how unheard of this kind of situation is. It really does seem like there's some trick that Ferrari(and even Red Bull) are missing in this regard. The turn-in responsiveness between Ferrari/RB and Mclaren/Mercedes is incredibly noticeable. Red Bull makes up for it with amazing performance elsewhere, but Ferrari just isn't great anywhere where there's an aero load. Hence why they're now 4th best.