Okay, looking at Jenna1 vs. Belial even further...
Belial has 9900 HP. Damage that can be dealt to her in a round, if I understand the topic correctly, 5484 (Raquel is 2742, the others apparently total up to hers as well.) For summary's sake, we'll say this is 5000. So... Belial barely gets two rounded by average damage... Okay. Going to be kind to her and give her 70% PCHP, for the sake of this.
Her best damage is 1400, physical, to an average of 2311 HP, so she deals about 61% PCHP a hit.
Jenna's formshifts each have 1000 HP. Damage dealt to her in a round is 759, so each form has about... 40% PCHP, at a low guess. In other words, there won't be many problems for Belial to OHKO each form.
Her damage used here is Genocide, 141 to an average of 445. This is about 31-32% PCHP per hit.
Belial (Distortion) -> Belial (Tank Drop (61%, form 1 killed)) -> Jenna (Formshift, Genocide) -> Belial (Tank Drop (61%, form 2 killed)) -> Belial (lol) -> Belial (lol) -> Jenna (Formshift, Debilitate) -> Belial (Tank Drop, third verse same as first) -> Belial x2 (lol) -> Jenna (Formshift, Genocide) -> Belial (Tank Drop, kills)
Okay. So, as expected, Jenna gets one normal and one Debilitate'd Genocide off. Question is, does it kill?
Well. I know it does for me, since I Delibitate hitting most stats down by about 18% or so (end result of being fully Debilitated is that everything you do is about half as effective. DDS allows three uses, I think; SMT:N allows four (and scales the result back, as well). Correct me if I'm wrong here, since this is the vital part.)
So... seeing a 10% increase in damage from Debilitate is all this match takes for a Jenna win, I believe; and remember my HP score there is higher since I rounded it off. The actual value's closer to 66%. So... yeah. Draw your own conclusions, but for me, both Jenna forms win this without much problem, looking at this.