Generally I see in the latest part of the approach it needs a bit of help, especially when you need to decelerate from 250 to green dot. Usually some speedbrakes is needed, even with winds loaded.
My idea is that either is due to idle/perf factor probably wrong or because initially was developed for NEO aircrafts then retrofitted also to CEOs. On NEOs works quite well on CEOs needs some help… But again it’s my theory. Honestly I like a lot.