These two are quite the polar opposites when it comes to position. As a lot of us may already be aware of, if we go by the hat color, Hatate's "rank" is actually really high – higher than Megumu even. But still professionally, she's possibly much less experienced than even Momiji.
On the other hand, while Momiji sports a red cap which puts her on the same rank as Aya, her position is actually rank-and-file. Like, not even a captain. The "petty" part that you may see in her translated title is quite literally rock-bottom.
