I’m sorry that you lack the ability to understand nuance but yes, there is a difference.
Playing World of Warcraft, aside from PvP, you have three primary objectives. Level to max, clear a raid and obtain all of the best loot in the raid for your specialization.
Botting for levels, paying for raid progression carries and bidding on ENDGAME items from raids is all a form of P2W.
Paying a Hunter to perform a skillful task to help you acquire one specific blue, non-BiS dungeon ring that will get replaced is not at all comparable to an entire loot-system that fuels the RMT economy and puts a monetary value on every single piece of raid loot. It does not ruin the rest of the money-making methods, causing players to only do this one activity for gold.
It’s about scale and what kind of impact it has on the game for all of the players. One single dungeon blue that’s not even pre-BiS does not have a negative impact on the game.
It does not take skill or player ability to lead a GDKP. It does however take skill to farm DMT for an item with an astronomically low drop chance.