I've got good 4 sec weapon (The Witchdoctor Doomblade). Does any sense to use it with our Mythic (3.5 sec delay)? Or better find worse weapon, however 3.5 sec delay?
There's only one reason why people aim for equal delays, and that is to time auto-attacks easier.
If you aren't doing this (which you shouldn't, for the reasons mentioned in this thread), differing delay won't make a difference overall.
While using matching delays does help a bit, Doomblade and Throatripper both own too much to consider downgrading to the incandecent blade for the matching delay.
If you had none of them, but could get any of them. Which of the Doomblade, Throatripper or Incandescent Blade would you consider the best when combo'ed with the myth epic? My gear is currently directed towards slashing (Ganak's, Treasureseeker's), so a slasher seems ideal especially one with more + slashing. Does Throatripper outweigh going with a slasher? Is the Witchblade proc worth giving up the matching delays?
Would someone with the Witchblade mind posting a parse from something like Kor'Sha or CoD? A turkey shoot zone where you can melee almost permanently. Pie and stats showing the proc triggers, preferrably compared to some other weapons procs?