Mileena at the bottom? I would place her bottom mid tier. She needs a viable overhead (Meterless) that nets damage. F3 leads into 40%, but you can see it coming from miles away, and she only has one string that's +2 on block but hits high so you can just low block all day and not worry about it at all.
Honestly her neutral makes up for it though, an amazing B1,2 in all variations that's good for catching whiffs, a 7 frame roll that can punish a shit ton of unsafe strings on reversal and can lead into Oki for Mix ups and on top of that an Armor stuffing F1,2.
I think that she's low because not many people are representing her on a high level so they know nothing about her and I don't even know who JDM is.. Lol, soooo.