You really should try playing at higher level M+ before opening your mouth. That and roll a tank so you learn about tank defensive cooldowns and correct usage of them. Use them well, you probably will not die. Use them badly or have useless dps that let mobs live too long, tank dies.
In all likelihood at the level you play at, you will have tanks that are over geared for the dungeon, they are there to farm wyrm fragments. Once you go past +16’s the damage tanks take, and the rest (heal/dps) ramps up noticeably. It then ramps up again at +20.
Even at lower level M+ under +16, a tank can get one shot (or it looks like it). If they mess up and don’t have a defensive up of some sort before pulling a pack. Example is the last 2 packs in Vortex P, on pull the tank gets or can get hit with three hard hitting melee swings from mobs. All almost at the same time. A decent tank knows that and will either have a defensive up, pull with some sort of slow on ground (dk death and decay) or have a healer external on him. If not… he dies. It’s knowing the mechanics.
Dps get one shot normally because… they fail mechanics. Example, last boss in HOI, there is a reason the tank gets knocked away by the boss every so often and the tank has to either immune the knockback or get back to the boss instantly (not the gauntlet part but actually in the fight, boss will knockback tank, then soon after fire a tankbuster beam). The boss will hit the nearest player in range and if its a dps, its a one shot. The dps, should keep at max melee range at all times, to reduce the risk. So many fail that.
Most my runs as a tank, I read the interrupt’s done after. Nearly always, its tank did 20+, dps lucky if they do 10, many fail to do more than a couple. There are a lot of mobs in the dungeons, that if they fixate a dps and the cast they do does not get interrupted, it’s a one shot if it’s on a dps or Healer (containment orbs in HoI for example).
DK tanks… have little in the way of straight up mitigation. By design, they heal up AFTER damage is done. Thats why they usually out heal the healer. Also scare the life out of healers who are not familiar on how DK’s work.
As for soloing boss’s. Yeah, if the boss has had enough hp % removed, tanks probably can solo the boss if nub dps all died. However the single target dps of most tanks sucks. So it will take so long, you will probably be better off wiping. Last boss in Vortex, once more than one add has spawned, tank will not have enough dps to kill them, the aoe will kill the tank, if he is solo.
Tanks do not have easy mode. Tanks have to know the route. Know which mobs are priority for interrupt’s, cc, kite. Tanks have to know what does frontals and where to place them. Tank has to know all the boss mechanics so he can be in right place, use cd’s and prevent a mechanic that one shots others… Dps go brrrrrrr, with one eye on dps meter, the other on their dps cd’s…
Meanwhile healer is screaming get in the f, green circle on the 2 dragons in VP, at the moron hunter or dopy chicken, who stand outside it with their hp constantly dropping. Or fails to use the vortex to jump up away from the silence ring on the 2nd boss in VP and last but not least, spends the entire fight downwind of the boss, taking so much damage the healer gives up and lets you die.
Loads of examples. BH, guttshot boss, with the 2 hyenas. Dps is targeted by hyena, fails to kite hyena into one of the traps on the floor and has full on focus dpsing the boss. Dps dies… wtf tank… why you let me die, wtf heals, why you not heal me… Lol.
Or the dps who cannot seem to get standing in the boss’s hitbox = you take aoe damage on a few bosses. Or who don’t run to the edge of the room with a dot that has to be dispelled, or it drops crap on the area you stayed in which does massive aoe (first boss HOI).
lot’s of tips in what I wrote btw, try using them. Fix your own fails before trying to claim everything else is broken. Lastly, if your dps cannot do double the tanks dps, they were either under geared or simply bad…