I mean, without the charge(which White Hawk couldn't have known about) it was possible that it'd only be a Minor Success! 5% chance! And he didn't know about the shield generators!Minor Success: DC 5. Moderate Success: DC 10. Major Success: DC 15.
Stat Check: HIT 9. Lady Leizi Black Swan, and Handyman have a combined HIT 25.
You rolled: 10.
10 + 8 + 3 (Feel Recharged) = 21. Major Success! Critical Success!
Like look at this WH really though he could take on 3 Metas at the same time. Like with LL's buff we would haev passed Moderate success at minimum even if that probalby meant LL being more injured than just losing a Shield. Also I think WH being gagged is due to teh crit since it stops him from using his Rep for the rest of the mission.
But seriously, in-universe, his logic is sound: he has super speed, toughness and strength, while LL is physically a normal human. We saw with Seraph how easily someone with super strength can kill a woman who is physically just standard human when they already have a hand on their neck.
The difference being that LL was willing to take a risk on the hope of getting free and had the shield generator to take an otherwise lethal blow. Meaning she lived long enough to get moved to safety by Mona.
Now, what he'd do after that? Not as clear, because his whole plan was reliant on the idea they'd surrender. Which was where the real arroganced lied: assuming things would go as he predicted/wanted them to.