eLINminator let me borrow AT gear for ubers on MP8 in order to compare this build to archon. Had two cm/ww wizards and a carry for a group of four.
1. Death blossom
313k damage + SoJ
2. Archon with 50% uptime
303k damage + SoJ
6810 armor (in archon)
980 resists (in archon)
Death blossom has extreme problems with reflect damage, mainly due to its uncontrollable nature. This lead to two deaths on Seige/Kulle when the torrent decided to hit Seigebreaker multiple times in succession and Kulle not at all. It was also an issue on reflect damage elites. The unpredictability of the spikes made it difficult to counter with health pots or diamond skin.
Maghda/SK forced me to run around arcane beams and away from flies, as each one would take half my health and I couldn't rely on death blossom for life steal (again, random damage).
Ghom was no problem at all. However, with death blossom the kill took ~1 min 40 sec and with archon it was ~1 min 25 sec.
Currently it seems to fall short on both survivability and damage. Any gear or skill changes to improve survivability would necessarily lower damage. This build really puts the glass in glass cannon.
I think dropping diamond skin for hydra may surpass archon in terms of damage, but does nothing to improve survivability until changes are made to reflect damage or hydra's interaction with life steal.http://us.battle.net/d3/en/calculator/wizard#bejSiO!YWT!cZacbZ
The one place it does excel is when the room is filled with mobs. Nothing else could possibly kill large groups more quickly.