The only ridiculous assertion is the one you are making.
This issue is not so apparent outside warzones, but in PvP it starts to show its ugly head. It feels the same as Warhammer did, so much so i am starting to believe Bioware copied a lot of Mythics netcode. I cant say for certain what causes it in ToR, but in Warhammer it was the way client-server determine if all the conditions for skill to go off are met (los, range, etc). In wow client starts performing the action before server checks the conditions, in Warhammer it was the other way around resulting in "delay" before your client starts executing the skill on your screen.