Re interpretations: I don't have a problem with letting people vote whichever way they want. Indeed, it is part of the fun of the thing, since Plot Power is the place where it's entirely possible for one person to call a character a Light and another the same character a Godlike.
I do think that in certain cases it's fine to basically asterisk a character to note which form is being referred to. For instance, Wiegraf/Velius rather than just "Wiegraf" makes it clear that the Zodiac transformation is legal if he wants it. That's about it.
Unfortunately, as a result, respect splits can be pretty massive. Take Penelo from FF12. From her plot scenes, she's a random street urchin who becomes a budding Air Pirate. High Light at best. On the other hand, she also helps knock over hordes of monsters and can wield legendary weapons and might have Espers bound to her and under her control, which would make her a Heavy. Meh. Not sure if there's really a good answer for these type characters, aside from ranking them somewhere in the middle and hoping for the best. (Relm was an example where the Light ranking didn't fly at all, since she has a much better claim to Magic / Espers than your average FF6 character being a Thamasan, for example. Oops.)
Johnny Garland (SH3) vs. Dart (LoD) - Close. They're both kinda naive, but have superpowered holy forms. Tiebreaking by the fact that Dart's feels less limited - IIRC, he transforms permanently into the Divine Dragoon in the last battle, while Johnny has a plot-limit on how long he can stay Awakener.
Lucia (Lunar2) vs. Ryu3 (BoF3) - Obligatory Lucia anti-vote, Dragons > Goddess hype also sounds about right.
Alucard (Castlevanias) vs. Mother Brain (PS2) - Didn't beat PS2, still feel safe in voting on this match. I'd imagine that the undead would be hard to manipulate anyway, not entirely being human or robot or anything, and Alucard has lots of plot firepower.
Hugo Hewitt (WA4) vs. Cecelia (WA1) - Cecilia is basically a godlike to me. She's more than a competent crest mage; she's the Innocent One, Chosen by the Spirits, has unique magic all to herself, blah blah blah extreme Mary Sue. Her Guardians have a wide-area nuke, she can probably convince a golem to pick her up and shield her, if Hugo tried to sneak up on her then spirits would warn her, etc. And Yulie's summons nail Hugo in game.
Alundra (Alundra) vs. Emeralda (XG) - Yeah, Alundra is kind of a spoiler heavy. Jude or Kresnik would win this match with Apoptosis!
Prier (LP:T) vs. Kevin (SD3) - Kevin is male, yes, but he can also TRANSFORM INTO A WEREWOLF. I think that, like Yuri, this would mostly negate that weakness.
Zelos Wilder (ToS) vs. Garet (GS) - Reminder, guys: Zelos is a competent triple agent, and the playboy dilletante image is mostly just a mask.
Roger Bacon (SHs) vs. Leena (CC) - Bacon is more like a Middle to me, but he's well-established to be a bit of a pervert, and Leena's techs have names like "MaidenWhatever." Bacon is too distracted to be at the top of his game here, as he probably tried to chat her up.
Alfred Schroedinger (WA3) vs. Poco (AtLs) - Good match, could go either way.
Dog (Secret of Evermore) vs. Mist (FE9) - Mist has a new pet, because she is a special pure friend of everyone and dogs look for companionship.
Skye (Grandia2) vs. Shiho (VP1) - Come on guys, the outcome of this match is obvious: they become friends and Shiho has a new bird familiar. The only question is, who does that count as a win for? The minor goddess or the piece of the God helping her? See above match's logic.
Also, DHE... remind me. Does Skye ever exhibit any godly powers aside from amazing powers of lift and the ability to talk?