All I was pointing out is that large group pulls aren't absolutely, 100% better/faster than single group pulling, like was being claimed. It's never a good idea to make an absolute claim like some have been doing, because there's no such thing in reality.
And where did you get the idea I was implying that "the stars have to be aligned"? Did you even read the conclusion of that post? Here it is again:
That's a lot of "ifs". The fact of the matter is that single group pulls (not single target killing) can be just as fast as group pulls depending on the situation. If enough of the "ifs" aren't met in large group pulling, it can take quite a long time to down the mobs.
Bolded the relevant parts. I never claimed if you just screw one tiny thing up it messes up the whole thing.