Hubert vs. Lexis (Lufia 2): Yeah Lexis is way out of Hubert's league.
Hubert vs. Lemina (Lunar 2): Even if Lemina 2HKOs, I think Hubert can kill first with Banshee, counter, Frozen Lance, since Lemina mdur is shaky.
Hubert vs. Frog (Chrono Trigger): If Hubert goes for 3HKO with Iron Lance Frozen Lance, Frog can alternate Leap Slash and Cure 2 until he kills. So Hubert needs to be countering with something. Miasma? Hubert attacks, frog attacks and triggers a counter, Hubert attacks, Frog can't attack so he heals, repeat... nope, no better. For Hubert to win he needs to 3HKO with something he can counter with, which doesn't seem to exist outside Arrow of Indra which is both hard to spam and gets him doubled. (Double Leap Slash almost kills by itself.)
Hubert vs. Nergal (Fire Emblem 7): Mire doubles and does 29x2, from outside counter range. gg.
Hubert vs. Luke (Tales of the Abyss): Luke is above average movement speed probably, so we'll save the "auto-owned by Banshee" tag for Anise, I guess. And he is 2HKOing and going first.
Hubert vs. Setzer (Final Fantasy 6): Setzer is barely faster and 3HKOs, but it's ST so Hubert can counter Miasma, Miasma counter Miasma, Frozen Lance finisher.
Hubert vs. Rinoa (Final Fantasy 8): Rinoa 2HKOs and goes first (should make a threat range average, but I'll be stunned if 7 isn't below) so no need to math out anything else.
Hubert vs. Labyrinthia (WAXF): Go first, 2HKO.
Hubert vs. Parasect (Pokemon): uh. Hubert can't quite ORKO, so Parasect can Spore -> 3HKO with Slash. RBY sleep is really good.
Hubert vs. Peco (Breath of Fire 3): Hubert doubles! ... only with Miasma, probably, but still. That lets him rip a large chunk off of breaths. He 3RKOs this way and overpowers any healing/regen, Peco ain't winning with damage before then. Peco might land Dream Breath, but that alone will take some luck and it's hard to see him winning with his mighty 6HKO (to Hubert!) physicals.
Hubert vs. Hix (Suikodens): Banshee.
Hubert vs. Subaki (FE Fates): Well Mr. Perfect is immune to magical counterattacks, while Frozen Lance triggers counters back. Still, Subaki damage sucks, only 4HKO even against Hubert. Subaki goes first so Hubert needs to win in 3 attacks which don't trigger counters, and seeing as Arrow of Indra gets him doubled that leaves Dark Spikes as his best and that's not enough.
Katarina has 0.79 HP, 0.60 pdur, 0.95 mdur, -0.57 speed, 3 shots of 66% and 1 shot of 99%! Plus some weaker damage which never comes up in this field (or many Katarina matches).
Katarina vs. Lexis (Lufia 2): OHKO? Yikes. Circlet isn't enough by the average I'm inclined to use, although I could be argued.
Katarina vs. Lemina (Lunar 2): OHKO, may not have to.
Katarina vs. Frog (Chrono Trigger): OHKO.
Katarina vs. Nergal (Fire Emblem 7): Doubles with a L3.
Katarina vs. Luke (Tales of the Abyss): Assuming no 1 mdef is 1 damage saved off an average attack, Luke... fractionally survives a L4, yeah. And he can scrounge some small lightning res anyway. Go first, 2HKO.
Katarina vs. Setzer (Final Fantasy 6): OHKOs but doesn't have to.
Katarina vs. Rinoa (Final Fantasy 8): A little bulkier than average, so yeah, 2HKO first again.
Katarina vs. Labyrinthia (WAXF): Lightning war! Except Katarina is just better.
Katarina vs. Parasect (Pokemon): Spore does its thing again. Saved by lightning resistance.
Katarina vs. Peco (Breath of Fire 3): Well Katarina is going first. And L3 + L4 kills through the healing.
Katarina vs. Hix (Suikodens): OHKO.
Katarina vs. Subaki (FE Fates): Well Katarina is slow enough to miss a double, but not slow enough to be doubled. Katarina 2HKOs him and he can't 2HKO her. (kinda sad)
Katarina 9-3 (don't think she's Light, even with the bad stats and lightning lock. Light as a division is below average mdur generally, which leads to bad times for them).
Hubert 6-6 (well, he's definitely interesting, and certainly competent in the division, but he probably does belong there)
Abstain on Primrose for now, need to figure out how I see Octopath damage. I do kneejerk towards his idea that magic damage is kinda underrated at the moment though. Yangus... eh, not too interested.