come support the cause Unarmored Mounts Megathread 2.0
I see where this misconception comes from. The Corrupted Ashbringer is not limited to one per server. This being said back in vanilla wow only small number of guilds were able to clear naxx content effectively leading to only a small number of players obtaining this weapon. So with this in mind it would not be unexpect for only one player to have the weapon on a smaller servers due to the amount of effort that went into obtaining it back in the day. Same could also be said for full tier gear from naxx as well because assembling all the other pieces was an ever harder undertaking.