Godlike:
Myria (BoFs) vs Luca Blight (S2): Yup.
Johnny Garland (SH3) vs Loki (VP1): Loki takes about 10% extra to magic, Dhyer. That said, I view Loki's HP as competent enough, here.
Heavy:
Momo (BoF3) vs Hrist Valkyrie (VP2): Assuming VP2 couldn't block sleep... mm. That should let Momo buff her way out of trouble. Boss form gets haste-healed, the buffed before she sees her PWS.
Middle:
Leah (CC) vs Venusaur (PKMN): zzz.
L'Arachel (FE8) vs Humphrey Mintz (Suikos): Doubles and hits the right defence.
Light:
Lucia (Lunar:EBC) vs Nara (DQ4): She probably wins a stallfest? Nara has no way to blitz Lucia ever, that I can recall.
Roy (S5) vs Yam Koo (S1): Roy actually has one of the lowest Tech stats in the game, so he should be pretty terrible at parrying. SUIKODEN HIDDEN WEAPON PROPERTIES!!! make it hard to be certain, but I'd be shocked if his weapon had a better innate parry rate than the prince's, and prince's parry rate isn't astronomical even with 120 more points of Tech.