What is the purpose of other heroes if everyone wants Antoria/Voidpiercer? (Warped)

Since Antoria allows you to literally fly and Voidpiercer allows you to teleport to bosses. Is it a design flaw to have some weapons have so drastically better quality of life than others? I love Antoria and will probably main it (like majority of players), but i still think it is not fair for warp "mmo" server.