The Fate of Saurfang NPCs to strong

Hey all, I am trying to do the Horde War campaign I have already completed Zandalari forever and started progressing to unlock the tides of vengeance achievement. My issue is that I picked up the quest from Sylvanas in org and am now on the “On Track” quest which has me kill 3 SI:7 agents but when they spawn they one shot me and the NPC that is assisting with the quest. I am lvl 50 Ivl 146 and I don’t belive these mobs should be that strong. Any ideas would be appreciated.