I think Maki stalking Ruby hardly matters at all. I don't imagine she will even lose Maki to begin with. Not to mention, even in a direct fight alone, Ruby has a massive scythe (obviously, lmfao) that will utterly slash away at Maki. So, close range is off the table. Ruby can spam bullets, with even a single one landed decently screwing over Maki, a 2x weaker opponent. Also, the utterly insane acrobatics I remember her having in the anime. Just sheer agility and acrobatics, and their consistency, from Ruby would probably have Maki’s jaw open, lol.
As for Analytical Prediction, I don't remember it being that impressive as, IIRC, she has only used it on Naoya as he was traveling in straight lines. So, despite the detailed description of her prediction and senses, the feats she has performed with it are honestly kind of simplistic and something I could even see Ruby take an advantage of to land a deadly strike pretty quickly.
Anyway, that's about it from me. I'll let others continue their debates and vote, and whatnot. Its half past midnight and I have work tomorrow. Cya.