Ok, I'm new to the game, so it may be that, but since I did a lot of stuff as DPS, tank and healer already, I say... Men, it's not that hard.
I mean. I pull one pull. If my health is down to 20% too many times, they did a lot of dmg, so one-two pulls at a time. If it stays over 30-50%, I pull the whole bloody dungeon at once. That's the first run. Throw my tank skills (it's pretty obvious everything that says "INCREASE YOUR DEFENSE" is a tank buff), and since they don't stack and have long CDs, I have to throw them in order to mantain the DMG in check. Also, area attacks, let the DPS do their thing, use my main rotation against bosses/when there are 1-2 mobs, otherwise AoE. Like in every game everytime, boss needs to be turned around, areas must be avoided but I should not move unless I have to, better eat something myself than DPS/healers, mechanics need to be consulted BEFORE entering the dungeon (that's what Google is for, and YT too) and instant kills (or tank busters as you call them here) needs to be confronted with specific skills...
So don't know. I always try to go as fast as posible. It's what tanks are for, pull as many as posible without being killed. As posible, of course, I will not pull 4 pulls if I'm struggling with 2, but for now I haven't got any complains.
I mean, encounters can have specific mechanics that are hard, but the general lines... It's pretty much the same thing. I go as fast as my equipment allows to. And I always care of having the best gear possible for my role.