Nice post but afaik the Core doesnt have armor, dont know if you watched your damage, but you dont get any crits or status effects on the core
just damage of your weapon/AW. The best way so far is Elytrons  ability Thumper. You can stack this ability.
1. Get to the core
2. Use Large Energy Restore
3. Use Thumpers
4. Look at 2.
5. Look at 3.
6. Do this for like 30 seconds
7. Activate the Disruptor and do 2.+3.
8. Attack the nodes (damage multiplier)
9. ( Laugh like a evil genius