Thrust stun adversely affects the next swing, not that one. And that overpoweredness isn't the case in cRPG (at least, not to a huge extent). Imo, thrust stun should go to 0.4000 across the board. Still slightly more than all the other attack directions.
Whether it affects the next swing or the thrust itself is besides the point, it is a disadvantage of using the thrust. As soon as it is 0.4, the stun is completely irrelevant, because I am not even sure if any weapon can execute an attack within that time.
Correct me if I am wrong, but there are two different stun things for the thrusts right? Your thrust doesn't always get stunned like that when it is blocked. So isn't the duration of that base stun not already something around 0.3, with the 0.7 one only happening when you execute a bad stab?
My main gripe with this thrust stun is that when I use a 2h, I know exactly when it happens, and it never happens otherwise aside from hitting an object. Hitting very late in the animation, ergo dragging the stab into someone gets you stunned. Which is excellent, because that is one of the lamest things in the game, the 2h thrust swipe of doom, that shit should get punished. The 2h stab does damage far beyond the point it should anyway, when it is already starting to retract. Getting punished for hitting objects and doing very late dragging stabs is something I strongly encourage.
However, when I use it with the longspear, might just be the weapon and not the class. The only way I can hit is doing dragging hits, not nearly as late into the animation as 2h, but I can't put my finger on when I can expect the thrust stun to happen. When I hit an object or the floor, I am completely okay with hit, I fucked up so I should get fucked. But half the time I do a stab as always and suddenly I stand there staring at my limp stick for a full second.
On the point of 2h stab OP-ness in cRPG. It used to be slow but long, while the polearm stab was short and fast. The polearm stab is still short and fast, but now the 2h stab is also fast and can do instahits on facehug range as easily as polearm can and could. It is also able to hit incredibly late as incredibly early into the animation, which makes it almost impossible to chamber. It basically has no weaknesses apart from the thrust stun, which is why I wouldn't want it gone from cRPG. I don't want it gone for poles either, I just would like it to feel less random.