Usual disclaimer: No P4, but not a lot of matches, so screw it, I'll vote Yosuke anyway. And no CS2 either, but since Tide made such a fine topic, sure whynot off theory + some CS1.
Towa Herschel vs. Yosuke Hanamura
Towa is slow and Yosuke can go fishing for crits with Brave Blade or maybe even random status (If P4 has a status that CS doesn't), and Brave Blade barely 2HKOs I think which puts massive pressure on Towa's EP pool, she's only got 9 heals. If the P4 damage average is seen as higher, she's got a chance off Petrify maybe, but I doubt it.
Towa Herschel vs. Ryudo
Well this is basically the perfect opponent for Towa, someone who runs out of gas and only 3HKOs. Her silly healing -> Energy Rain stall start just might work here after all, as long as she aggressively heals when a Ryudo double is near. Throw Hydro Cannons at his face otherwise.
Towa Herschel vs. Clive Winslett
Clive is constantly 2HKOing, but is somehow slower. A high TB speed floor means I don't think Towa is getting the doubles to actually win here rather than be heal-locked.
Towa Herschel vs. Sceptile
EARTH and WATER damage vs. GRASS. Giga Drain ends any hope Towa has of winning ever.
Towa Herschel vs. Alexia Lynn Elesius
Another 2HKO, although Alexia is slower... I don't think Towa gets enough doubles before running out of EP anyway, and Alexia is getting mildly faster as the fight goes on.
Towa Herschel vs. Barret Wallace
FF7 blocks petrify, but Barret's damage is kinda trashy (at least in the stat topic assumption of no materia)... Towa might actually pull this one out. Barret might get to Mindblow her once, but she can Energy Rain and not die immediately, so Barret needs to angle more for Angermax, which isn't happening vs. an S-Craft.
Towa Herschel vs. Yangus
Yangus when ID is blocked is kinda sad.
Towa Herschel vs. Miakis
Miakis has too much pressure here I suspect with erratic damage and her own occasional healing and probably some element-blocking nonsense.
For Fengalon, is Sonic Scratch *only* a counterattack, or is it usable normally as well?
For my votes, obligatory warning that I see all that WA3 boss damage as worse. The fact that WA3 bosses lose half their damage if you durdle around healing and doing nothing is pretty terrible, and while I might be willing to let them have their damage if assuming a very optimized spending of FP in the damage average, I don't do that. I cap TB speed pretty tightly too, so... this is gonna be rough. Fengalon looks like he's sporting ~1.1 PCHP in durability.
Fengalon vs. Yosuke Hanamura
Magic damage & healing.
Fengalon vs. Ryudo
G2 techs ignore evade?
Fengalon vs. Clive Winslett
Kills with a single Lock-On at 50 FP it seems, or even sooner if he gets a lucky hit.
Fengalon vs. Sceptile
Magic damage.
Fengalon vs. Alexia Lynn Elesius
Alexia is very accurate and Fengalon gives her so much time due to having to re-cast his evasion buff. EDIT: But sure, Fengalon being able to use Sonic Screech, or hyping ALexia Wind weakness, might turn it.
Fengalon vs. Barret Wallace
Angermax. (I don't normally hype L3 limits as even possible but I might make an exception here. I think Barret might have had a 255 Accuracy weapon anyway.)
Fengalon vs. Yangus
Well if Fengalon can win a single match it's this one, depends on if Yangus's stuff was ITE or not.
Fengalon vs. Miakis
Miakis's healing is pretty effective here against the mighty starts-a-4HKO-and-gets-much-worse game, I think S5 crits were ITE if nothing else. EDIT: apparently not.
Tatanka is listed as High Middle, and solo boss scaling plot applies, and I dunno about hyping tech ring perfects for boss scaling which pushes the damage average down some, sooooo that's kinda rough in an L/M pool. Yosuke (and MAYBE Miakis) might outheal here but he's winning any "fair" slugfest. Sceptile additionally gets set on fire by Red Nova. Guesssing a 7-1 with only Yosuke winning unless Miakis's Shield Rune healing or block rate is better than I recall, but I'll hold off actual analysis.
Mirdyn Walhorn vs. Yosuke Hanamura
3HKOs first with wind magic. That might be a 4HKO if Mirdyn spams some healing, but I'm not sure that gets him to Rending Gale either.
Mirdyn Walhorn vs. Ryudo
Outtanks.
Mirdyn Walhorn vs. Clive Winslett
Outtanks, walks into Rending Gale.
Mirdyn Walhorn vs. Sceptile
This is actually kinda interesting. Sceptile's draining is not real inspiring here, and his damage is weak enough that a healing strat might plausibly survive to 100 TP. Maybe later.
Mirdyn Walhorn vs. Alexia Lynn Elesius
Outtanks, Rending Gale, etc.
Mirdyn Walhorn vs. Barret Wallace
TO doesn't block ID I think, so this is a match where Mirdyn doesn't want to attack after a certain point. Luckily for him TP builds naturally so he'll eventually RG even if Barret stops attacking. Also usual wrong defense note.
Mirdyn Walhorn vs. Yangus
ID.
Mirdyn Walhorn vs. Miakis
More of that outtanking. I think S5 crits might have been ITD too, but not sure it matters enough.
Towa: 3-5
Fengalon: 3-5?
Tatanka: 7-1?
Mirdyn: 5-2-1