Can anyone clearly explain "job homogenization" in this game?

[CNitsah]

Every tank simply needs to have cooldowns for tankbusters. That said, they are all different executions and forms of the same result. It's like my icecream argument. Tank cooldowns are different flavors of icecream. If you look at the way they play rotationally and how they feel though, every single tank is wildly different. Even if you stripped away all animations and made it so they were hitting with fists and wearing plain clothes, they would feel and flow completely differently.

I think tank are homogenized in the sense that you can play one, you will be able to play the others. It's the same mentality with every tank. Sure they all have a dps gimmick, but for the rest it's essentially the same. I think could totally create a tank without cooldown. For example a tank that get a "minus 15% damage" as long as it does its combos well, wouldn't have the 40% CD and invulnerability, and could have a bigger one linked to the moment he uses its burst. Or a tank based on decreasing dammage dealt by mobs instead of decreasing the damage you get. It's just some idea I came up with in the past 10 min, that I didn't though much about (so no need to go "It wouldn't work in XIV because ..."), but my point is more you can imagine doing thing another way.

But yeah, despite thinking the tank are the most homogenized, I also think they still get enough individuality on the "cosmetic/skills" side. But when it comes to the mentality/the gameplay loop behind them, it's the same process in its core, with a few tweak. Compared to Dragoon, Ninja and Samurai for example, it's not the same gameplay with a few tweak. the way each plays is more different than any tanks is.