There is a sizeable strength disparity, actually. Violet's only calc that seems to be accepted is very nearly baseline. The most recent
accepted Calc for Mon Musu (which...you know, is 1 of multiple revisions because their stats are a mess and we should fix that before continuing threads) gets a value of 62,999.19227 J on the low end. That is a 4x in Zombina's favor (Which she does scale to, as Papi scales directly to this). This is ignoring Tio's feats (
Door Fragmentation and walking through a concrete wall) if you don't agree to Zombina and her equipment downscaling through the Orcs (Taking hits from Tio), Dopple (Who can harm and stagger the Orcs and frankly is rated way too low and needs revised), and Kimi's durability (Tio roughly manhandles Kimi on two occasions with her strength, and Kimi not being killed by monster girls isn't a gag...it's actually plot relevant).
The weightlifting is a terrible feat to bring up, and it's already been noted that it and her falling apart while doing
yoga and trying on bras are probably gags, they even take place in Omake chapters focused on non-combat. She doesn't get dismembered in combat with the orcs (where she was grappled and had her LS overwhelmed), crushed twice by Kii and Suu, and is only dismembered by Shiishii because she was using a bladed weapon. Plus the Orcs have shown that Zombina has a gameplan for getting grappled by someone stronger if that occurs so if Violet tries to restrain her rather than knock away the guns, point blank gunfire.
SBA, Violet's got several hundred meters to close with someone who is using automatic weapons firing at her. She's clearly skilled, but that's a lot of ground to make up while dodging (because blocking is iffy considering Zombina's firearms should scale to the Orcs, and have better piercing using live rounds rather than the implied rubber), especially with Zombina just trying to paint the area with lead. And if spray-n-pray isn't working she can change tactics, she's noted as being entirely capable of precision if she needs to.
And Violet needs to make up that distance because her pistol is nearly useless. Only headshots matter, and even then zombies are noted to survive on some brain damage (Early Zombies), meanwhile body, arms, or legs will do literally nothing.
Which leads nicely into Zombina's tactics, which is even on her data sheet. She plays dead. Violet gets a good shot (Or Zombina purposefully puts herself in line to GET shot), she sells it and pretends to bleed and die. From there Zombina can watch and wait for an ambush.
Getting in close to dismember and slash Zombina is the main way to put her down, but Violet runs the risk of getting her blood on her. While she's pain resistant, she's not poison resistant, and the formaldehyde blood can cause violent coughing, eye irritation and watering, nausea, and of course death.
(Disease hax is not a wincon though, no, the Zombie Virus is on Zombina's teeth and Violet needs a weak immune system for it to even trigger)
And all of this is ignoring the fact that we're revising Zombina specifically due to stonewalling 9-A feats, and she may be even more ridiculously durable compared to Violet's near baseline.
From where we are now Zombina nosells Violet's range, makes it dangerous to cut and dismember her, has experience with being overwhelmed in LS, her body has much better feats for NOT dismembering compared to feats that are non-combat oriented, she massively out ranges, she's capable of both wild and random automatic fire and more precision shooting, using just Centoria's feat she has a 4x AP advantage, and her standard tactic is to make her opponents think they've won and then ambush them which gives her an element of surprise.
...and she's having her durability revised and almost all of this may not even matter.