Why is old 4set still so Broken for MM Sentinel Hunter?

Right now it is not worth it to go for the new 2 Set Bonus because the old 4set is absolutely Broken.

I am top DPS ing in M+ and doing really good in Raid with 50% of my damage being Aimedshot + Explosive shot. Leading by up to 2.5 mil overall dps in m+….

I could swap to new 2 Set Rn but it would be a huge dps loss. Im either doing something really wrong in my rotation or its really not worth it.

How are you feeling about it?
Tips would also be appreciated !

This is my Main btw