How come Wow has a faster reaction time compare to ff14?

[M4Fade]

My favorite post regarding the overall sluggishness of FFXIV ARR:

Originally Posted by Unruhe
On a core, fundamental level, World of Warcraft works. If you push an attack, that attack happens. If you run to a spot to avoid an AOE, you avoid that AOE. If a boss starts casting a spell and you press an interrupt, that interrupt happens instantly and successfully every time. WoW has a fluidity and responsiveness that a many recent high-profile games (TOR and ARR especially) simply lack.

How any development staff can sit down and say "Let's make a hotkey, tab-target MMO" and then expend zero effort in nailing combat absolutely boggles my mind. WoW exists. It's easily accessible. It's free until level 20. Have your devs play it. If your WoW-like game feels sluggish and laggy compared to WoW, then you need to start over. You don't release a game with a similar monthly fee while offering what is clearly mechanically inferior to WoW. The final kicker is ARR even managed to have a terrible tab-target system, too! How do you even mess up tab-target? How?!? SE knows, apparently.

It still bothers me that the combat ended up like this in ARR. *sigh*