How hard is achieving the gold medal in every challenge mode dungeon to get the Challenge Mode Gear? You can use any comparison. For example, Is it harder to get 2200 in arena or get gold in all challenge modes?
also, can someone explain to me in detail, Brawler's Guild?
Challenge modes and 2200 rating are apples and oranges.
There is no comparison to anything in the game right now because they are so different. But I would say harder as you will never get go up against a shit challenge mode npc who gives you a free win.