I can see how this mechanic could require reaction in a manner that many people aren't expecting and where they would find it difficult to react as quickly as something like a telegraphed physical attack. And I say this as someone who has no issues with it. I work in IT. Math is second nature to me. I think the unfortunate thing is that groups ARE ridiculing those who have difficulty with the mechanic. I've seen some pretty nasty macros and commentary in alliance chat. I would have to say I'm in the camp that says this was an interesting experiment, but it's just not a good fit for this game.