Goldoa Dheginsea does not move, and Wing Spear does not hit weakness on wyverns.
Anyway, initial thoughts now. Subject to data diving by myself and others.
Godlike
Dheginsea (10) vs Weisheit (Wild ARMS XF): Not sure I think Rank of Death has enough range here, or that I respect kiting arguments much in general. Rank of Death does get around mdef remarkably in-game, but hmm.
Cainaghis (10) vs Fargus (7): My kneejerk is that you don't use physicals against Caineghis and win. Fargus is pretty badass though, would need to calculate how badass.
Nailah (10) vs Levin Brenton (Wild ARMs XF): Levin loses to most FE heavies, let alone Godlikes. Evade and counters are two things he hates.
Black Knight (9) vs
Naesala (10): I think? He should double, and has Tear, and yeah. I guess Blackie might 2HKO him survive a turn, but I'm not inclined to vote that way.
Ashera (10) vs Katrina Liane Elysius (Wild ARMs XF): Uh ow.
Tibarn (10) vs Fomortiis (8): One Tear and this is over, and that's assuming I decide to respect Fomortiis' def which is itself shaky.
Dragon (7) vs Zelgius (10): Don't think I see Eclipse activating on the initial double. 64% chance so I'm sure some will disagree, and Eclipse definitely wins it!
Athos (7) vs
Charlton Blunt (Wild ARMs XF): Doubles with Energy Drain. That's too much.
Heavy
Lyndis (7) vs Roy (6): Well at equal levels Roy takes this easily. No idea how big an exp penalty Roy would have though. Hum.
Ashnard (9) vs Caeda (11): Blehhh, not sure I agree with scaling Ashnard against full-cast speed average. Maybe. Still, Caeda's not much of a Heavy when she isn't using Wing Spear.
Idoun (6) vs Rutger (6): Dunno.
Catria (11) vs
Ephraim (8): Low evade really hamstrings FESD in fights like these. They're kinda similar outside that, but that tips it.
Nephenee (9) vs Tanith (9): I don't think I allow Reinforce in general. Are we supposed to specifically assume it for this tournament, though? I'm fine voting that way if that's what is decreed.
Fir (6) vs
Eirika (8): Somewhat similar outside Eirika's huge lead in Atk and to a lesser degree Def.
Lyon (8) vs Elincia (10): I forget if Lyon ended up OHKOing or not. Elincia kills with the quad but not the double, so it matters.
Hector (7) vs Tana (8): Armads Hector actually negates a good deal of her evade, and even with doubles should certainly have quite a bit more damage. Unless she activates Pierce. Which she probably won't. So this is actually a weird spoiling match.
Middle
Nergal (7) vs Marth (11): uh
Colm (8) vs Lilina (6): That dodging
Marcia (9) vs Matthew (7): Weapon triangle feels like it tips this.
Oswin (7) vs Jill (9): Oswin against physicals is excellent, though Jill doubles for some good damage. Just... kneejerk he kills in three and she kills in four.
Canas (7) vs Pent (7): Weapon triangle and Luna's pretty cool in a mage-fight.
Micaiah (10) vs
Neimi (8): Well Thani hits a pretty nasty weakness and is extremely accurate... but honestly Neimi probably just doubles/2HKOs, she's good like that.
Oscar (9) vs Volke (9): Haha FE9 Volke, yeah no.
Lute (8) vs Jarod (10): Hm.
Light
Lucius (7) vs Innes (8): I dunno.
Gilliam (8) vs Agony (10): Uh Pain/Agony initial gauge,
at it.
Nino (7) vs
Sanaki (10): Equal exp Nino for failure.
Lethe (9) vs Riev (8): Riev is awful. Endgame stats Lethe is... a bit less awful anyway.
Jagen (11) vs
Oliver (10): Oliver's better than you'd expect. Endgame Jagen is... yeaaaah.
Mordecai (9) vs
Soren (9): Fire. Fire cleanses all.
Rhys (9) vs Pain (10): Uh.
Volug (10) vs Garcia (8): Hmm.