Yo sorry, I just ran across your post from earlier that did all the math between 2h and dw and did some wow webstats of my own on 25 naxx today and come up with about the same 363 dps more on 2h. Sorry about that :P
Hot Streak Rank 3
Any time you score 2 spell criticals in a row using Fireball, Fire Blast, Scorch, Living Bomb, or Frostfire Bolt, you have a 100% chance the next Pyroblast spell cast within 10 sec will be instant cast.
Thus, only those spells' crits (and, more specifically, only Living Bomb explosion, not tick, crits) will count for/against the Hot Streak counter. You need not worry about any other spells upsetting the counter, including Molten Armor.
If i'm mistaken, let me know, but wouldn't gaining haste also reduce the chance to proc MW per swing, while still keeping the same PPM? Or does it simply keep the PPM based on unmodified weapon speed, and give more chances to proc due to the extra haste?
I am way to undergeared to do competitive 3's so I grouped up with a ret and rogue (from trade cant remember names) and we skirmished a few games to test out the team. Skirmish is basicly the same as normal 3's if im not mistaken.