I think you're probably exaggerating a bit here. First off, just because THF can do more dmg, doesn't mean they are invincible. If someone is dishing out 25k rudra's chances are they will be dead shortly after. If you have a large enough group for that not to matter, then chances are the boss would have died fast anyway regardless of the THF WS update. You do know SAM was able to Fudo spam all along right? They are still the most powerful job in the game.