Moraa so far hasn't proven she will go out with Mu and stay on her heels. That's all that matters.
Somehow this forum delights in doubting prodigy frontrunners like Jakob and Mu. Meanwhile they're well clear and unconcerned.
But have fun looking at times
Moraa right now is much more of a Keely Hodgkinson kryptonite than anything related to Athing Mu. Hodgkinson in a day to day race isn't committed to the front like Mu. Therefore she has to deal with Moraa's erratic behavior and also the fact that when Moraa is leaning back and looks labored late in a race she actually has plenty left.
She'll out finish Hodgkinson almost every time in that scenario.
Last year in the Eugene final there were two distinct tiers...Mu and Hodgkinson like Affirmed and Alydar in the Belmont, and Moraa battling with Welteji for bronze many meters back. Now that Welteji has apparently abandoned the 800 for the 1500, Moraa has to decide if she's going to be content 5 meters back down the backstretch or if she's going to evaluate properly like Keely from Tokyo and recognize that her only chance against Mu is to be capable of 1:56 territory and draw even entering the stretch.
Mu's long strides, talent level and tenacity aren't going to allow a late desperate pass from several meters back.