No joke name a tanky invoker that outlives in 81 bsq where POS is equipable. As precrush said, MS invokers are very good. I can kill a 300k HP tank with 1 rolling stone+x spam on my summoner. To be honest in 81 BSQ the MSPD built mages usually carry flags and are always top on the scoreboard.
You don't see tanky invokers carrying because they lack the movement speed to catch the other flagger, don't have the movement speed to run from other players, don't have the movement speed to support properly, and so on as well as a movement speed built invoker.
From what I've seen someone like Cornhub/Vex/Ero/Flourine/shorthair is literally always top on the scoreboard as a mage depending on whose carrying the flags. I know 0 players that actually run the pos set and can carry properly without being caught from other players with 400-600 movement speed.
I personally can get around 450-500k hp in bsq with max dual resists with a pos set and die from 1-2 summoners within 5 seconds. I dont see why I would think moving like a rock getting hit by everything and trying to follow up/run away from everybody moving at 400-600 movement speed. Dashing is around 3-400 ms so that wont help, that is also very predictable to CC as a summoner/twin/invoker/sentinel/archer/savage/ninja/overlord/dragoon.
The pos set does not protect you from the full blow from elements. It's highly likely players on each side is running all different types of elements.
However, you are right to a certain extent. If that tanky invoker sits in a corner and lets everyone else defend him it would be almost as effective as long as your team doesn't all die protecting you. Once your caught, just like the mspd invoker you have a high chance of dying anyways.
Edited by Agitodesu, 11 February 2017 - 01:00 AM.