Originally Posted by
Reglitch
Fact 1 is wrong, for example 50% haste will not make a 2 second cast 1 second. Haste increases the amount of spells you get in a given time, i.e. 50% haste is 50% more spells, 100% haste is 100% more spells.
Fact 6 is wrong, if you have more heals, you're going to get more crit rolls meaning the crit you do have is more valuable with haste.
Say I have a 5 second cast and a fight that lasts exactly 5 seconds. I have exactly 57000 rating to spend on itemization. I could go 100% crit and get 200% of the damage, or I could use 25646 rating to get an extra cast (100% haste) and still have exactly 57.25% crit left over. That means I get 2 casts, one will crit and one will hit for regular amounts leaving me with 300% of regular damage in the same time frame. Obviously for output, the latter is superior, for efficiency the former is.
Fact 7 is grossly oversimplified.
Fact 8, again, grossly oversimplified. Especially regarding RPPM regeneration/clearcasting procs.