Well, sure, any chance to go on an internet rant.
TERA combat is a software engineering feat that plays significantly different from most other MMOs. The way abilities work and connect with enemies are more based on movement, timing, zoning, etc. Has stuff like dodging, blocking, and no tab targetting. Each projectile for example has its own hit detection, so you can dodge it during travel. Etc. Plays sort of like an action game with MMO styled abilities. If players are skilled enough the idea of "trinity" is moot.
TERA combat overall: The gameplay was designed with principles like positioning, timing, and space, in mind so you can see the effects at every facet of gameplay: your own abilities, enemy abilities, enemy behavior, animation, etc.
GW2 tried to do similar things but just slapped the concepts together onto a WoW template.
GW2 version of hit detection -> WoW except if the range on your ability isn't enough, you can still shoot, it just won't connect. Has nothing to do with actual hit detection.
GW2 version of dodge -> a command that throws you in some direction and makes you invulnerable for the duration.
GW2 version of removing trinity -> Make everyone a ranged character.
GW2 combat overall -> design concepts are half-assed and slapped together, resulting in sloppy gameplay. In dungeons, melee are at such a severe disadvatange its stupid to ever do anything other than shoot all day. And yes, I mean all day, because they give bosses about 20x the amount of health they need. Boss behavior is basically "throw a billion circles under the player so they have to use the dodge (see invulernability) command." It's so all or nothing and binary. This has the effect of morphing the general gameplay into an experience of "stare at the ground and make sure you're not standing in venn diagram hell." The design is so shoddy it's barely functional. Melee literally isn't functional in comparison to ranged.
ANYWAY the whole point of this is that people should stop paying lip service to GW2 and stop going along with it when people fanboy that game to hell and back.