How to counter 7 star Leviathan with 7 star Profundity

Thanks to moechan for allowing me to use their video with Mark6 reinforcement
This video goes in depth on how to counter Leviathan with Profundity in 3 different ways

[@alexaxl]

Thanks. I have been using the Prof against Levi for months now and I learned new things from your video.

[@jonsnoo9875]

For the Cassian approach, why do you always target Sith Bomber instead of taking out Sith Fighter first?

[@BeniMano]

Does Cassian version work against Dagger starter too?