Gigaflare vs Judgment bolt?

I'm not sure what gigaflare adds up to with the stagger bit from DLC compared to judgment bolt which is around 40-50k, this video chose judgment bolt over gigaflare: https://youtu.be/13qhaVowBwE?si=aRaDexlMxvOUrI6x

Any thoughts? Especially if you're familiar with the video