I'm sorry but I have picked Whip on Low Blow a few times just to see how "broken" it is. Because every time I antag low blow, the raider team has valeria. I did horribly. Whip will nuke AI, it's not nearly as good vs. players. I used Whip vs. Little Girl, and also against another Whip, lost horribly both times.
Also when it comes to Low Blow, if the raiders can reach the final platform, it is 100% completely impossible for an antagonist to win. The spawn points are all super far away, your only way to reach them is through 1 path which is easily defending from high ground, and the barrier's health is basically nothing. I try to keep raiders from getting up the ramp, but eventually they kill me. In the time it takes to respawn and even get anywhere near the ramp, the barrier is at red or dead. I've tried Whip, I've tried Kon's bubble, I've tried lots of things. That final platform is an instant win for raiders.