I don't think it's right tho, cuz the plausibility was made bigger/stronger with the help of the other constellations in order to enact more power, plus this swordsman knows what he's doing and KDJ utilized his own thing- the electricity skill to make the wounds uglier. In total, the power with which he inflicted on the outer god seems ok from my point of view
Exactly, and from the start none of his power came without a price - money, plausibility or getting to know the characters better for his bookmark skill, etc. And he's been paying that price from the start of the webnovel. Even here, almost all the constellations of the korean peninsula took some of the weight of the plausibility on kdj. That is enough for the power he's using, even less ig he can only use it once for now.
It doesn't make sense he suddenly overwhelming with power to attack the outer god like that. I wonder if antagonist/villains always wanna have to say something or have explain before an mc gets like 0 -> 100 powerboost. ╮(￣▽￣)╭