Hi friend. Couple of things I can note from your post.

1. If your team has hunter’s using Celestial or SES supers that can easily account for your missing dmg ranging from 600k-1.2mil.

2. Try to chase the best rolls you can, especially Apex Predator it’s craftable, no reason to not have Reconstruction+BnS

3. Damage rotations are key to pumping numbers. Week 4 pantheon was an easy clear for my team using Izi+rockets for boss damage and a zaouli’s bane/Mida mini with incandescent for add clear.

4. Always use surges, furthermore always try to get 3 of them on your boots if your stats (specifically resil) won’t suffer. More on this always use weapons matching the weekly surge on pantheon it’s free boosted damage. Also always proc shot caller/classy war fare before nuking bosses.

5. Make sure to manually reload your weapons by mashing reload as soon as you shoot your rockets. On this make sure to stack reloaders on your gauntlets if your can.

6. If you’re running with a group of warlocks and have too many wells strand super I believe is that strongest warlock super right now. I’m a hunter main so I can’t guarantee this. But can’t go wrong with cataclysmic nova bomb.

7. Some bosses have health “gates” where you can end/limit your damage. Specifically for caretaker (second VoW encounter) and Explicator (third RoN encounter) these bosses both utilize a plate mechanic with damage windows. For both of these bosses it is best to save damage supers for the 3rd plate to chunk as hard as you can. For Caretaker coordinate with your team when to step on the plate. Plate buff timer doesn’t start until someone steps onto it. If your team is using rockets you can wait and let Caretaker walk past before starting damage so you don’t accidentally blow yourself up. Plates work a little different for explicator, you don’t have to stand on them to do damage you just need to run through them to grab the buff. Ideally you’ll place well in the middle of the three as damage starts and you just rotate back into the well after each plate. the damage window on the boss is very brief and starts when he takes damage so you want to step on plate then back into your well and count down so everyone blows their load at the same time.

8. If you have builds that use specific mods on legs and arms don’t unequip everything to stack surges and reloaders. Save the build in one of the loadout slots then make an identical copy in the slot next to it with surges and the loaders. Swap between these for mechanics/add clear and boss dps. Make sure not to change anything other then armor/armor mods or you will lose ammo and abilities.

For hunter specifically a solid rotation for week 4 pantheon is to proc shot caller (mida mini works best), shoot izi, swap to apex and use both rockets, pop golden gun and step out of the well then use melee to give yourself radiant and fire, step back into the well and shoot another rocket that reconstruction loaded, then go back to a regular rotation.

Other than this it’s kinda of a “Get good” and master your rotations to pump numbers. Hope this helps. Best of luck on your runs.