Lucina (FE13) vs Scias (BoF4): So Sleep will work once. Scias badly needs the attack which removes sleep not to trigger counters (no clue) and it would help a lot if the second hit didn't face evasion (again no clue). Even then... it's a rough fight since he needs all four hits of two Shining Blades, and 2 of those minimum face 37% evade. It really sounds like too much.
Lucina vs Seed (S2): Seed magic doesn't 2HKO, Seed physicals do but get him OHKOed.
Lucina vs T260G (Saga): Well, I think this is the first time this Proving Grounds we get to see Lucina get completely destroyed.
Lucina vs Deamoned (BoF5): Ned should be able to turn off counters with stun, but it's not enough, since evade puts any hope of one-rounding out of reach, and Lucina's silly high damage mostly punches through his AD.
Lucina vs Demi (PS4): Demi needs a perfect sleep-lock to win this. Her sleep's not good enough for that.
Lucina vs Jowy (S2): Jowy does 1.1 PCHP unless you hand out runes to people who don't have them DL legally to pad the average. Fuck that noise, literally results in a cast with below average damage overall. Lucina only has 1.09 mdur and doesn't evade turn 1. EDIT: That said Jowy's own damage should be held against himself, sure, which brings him to... 1.0875 or so? Sure.
Lucina vs Decus (SO2): Decus 2HKOs faster, but dat evade ruins this.
Lucina vs Valvalis (FF4): Evade/weak/poke/etc. STONE prevents some weird turtle Lucina win.
Lucina vs Roufas (Saga): Palsy is basically PS4 sleep, same issue. Though... mm. It's significantly more accurate. Unless I force it to face Lucina's evade? Nah, status attacks don't hit evade in Saga, and Lucina doesn't evade status either.
Lucina vs Beatrix (FF9): Think we've seen this.
Lucina vs Harken (ACF): Harken survives a Lucina turn on raw defence, so survives two thanks to parry. And has counters, while her own damage is ranged. And has ITD/ITE Maximum Risk. She matches up very well here.
Lucina vs Teepo (BoF3): Y'know, I tend to underrate Teepo's durability. I can't imagine in-game damage is much higher than DL because Bonebreak is a much bigger factor in the DL figures than it is in-game, should offset masters. So he's... 4.7 PCHP or so? Yeesh. That said I don't think it matters, his offence above half HP sucks enough that it can't overcome Falchion healing (unless he uses Triple Blow which triggers counters, and still only barely overcomes it). Once below half I think Lucina should be able to blitz, thanks to her evade and Aether chances. I guess her Falchion doesn't actually matter much for her in long fights, +3 damage but fewer procs.
Lucina 8-4