I feel that the devs current view on the tanking classes is unrealistic as a whole.

Having one tanking class be the "dpsy" one and another being the more "tanky" one sounds great in theory, but it doesn't work in reality. Why? Because the vast majority of players will always prefer the "dpsy" one, as it makes fights quicker. The only reason they would prefer the "tanky" one would be if the encounter NEEDS that extra tankyness, making the other tankclasses useless for that encounter. This situation makes balancing the tanks realisticly impossible.

The only real way of balancing the classes would be for them to have the same damage output and survivability, but having different playstyles. Making one class do more damage will make that class prefered in basicly all content, unless it can't survive it, which would lead to the class suddenly being useless.