I mean, debate is Calvinball, so you could go either way. I've seen people win arguing that a K is too generic/doesn't link to the affirmative team's case, and I've seen the affirmative's response get nailed the same way.

There's also more performance than people admit to, if your responses seem more competent, that goes a long way. A slow talking K that gets responded to by a team speed reading their prebuilt, 20 point "Foucault was a wanker" folder is probably going to lose.