Dark Bead with the TCC nails approximately 3400 damage per hit under the same circumstances.
The argument that the Crystal Ring Shield made PvE too easy is why it was nerfed. You could easily ram it into a boss over and over for a very easy kill. However, Dark Bead can easily slay a boss in one or two casts with it's damage output.
Is Dark Bead's damage output too high, and in need of nerfing in order to maintain the game's status quo as difficult? What is your opinions and thoughts?