Wow raid bosses are not as random as they seem. Just use DBM on a boss you will see the boss does use abilites in a set order. What makes wow fights more choatic is that wow does not use AOE as heavily as FF14. Bosses have ablities that target random players rather then targeting the whole raid and push player responibility more. Both games use scripted fights its just how abilites work that seperates the two of them. WoW also has its in game dungeon guide that tells you what every boss in a raid or dungeon does.