But then again, sims aren't particular accurate either, sure they're regarded that way, but sims are also random, to some extent atleast, and they only account for a perfect and optimal rotation. You will never get that in the game itself, and you need to be aware of that as well, also during a fight you will also get hero and stuff, great diminishing the value of haste during the hero. also I know for a fact that even just with imp. soul fire and backdraft I have an incin with less than 1 sec cast time, making any value of haste absolutely pointless in regards of incins vs. CB absolutely pointless within the first 20% hp in a fight, and even less with a hero, so in those times you SHOULD always be casting CB on cooldown, since that is a bigger damage cast than incin.
Without those, why even bother changing up the rotation, you would change the rotation for something that really doesn't give you anything at all except for one more thing to track.
Btw I have 1285 haste, so not even close to the 1406 haste, and tbh, it doesn't really matter much, during a hero you hardly gain anything from haste, during imp. soul fire you hardly gain anything. so it is only out of those times where you'd actually be using incin over CB during backdraft.
---------- Post added 2010-11-18 at 10:51 PM ----------
Maybe not on paper, but you will still have to watch it, to see when it goes of cooldown, to be able to cast it immediately, UNLESS it's right after a conflag, but, according to my rotation you won't always hit that point, and so you will still have to watch it.