At least according to a few nincompoops here, at least. I'm not forcing you to read the technical talk on a game you're probably not going to play, but still, take a look at some of these replies. They make me cry inside.
Seriously, why play an RPG, even if a fast-paced action-based one, if you're not prepared to do some basic math? RPGs are all about the numbers, and if D3's endgame is as painstakingly difficult as promised, every bit of min-maxing will matter. For instance, this example here demonstrates the one flaw Crippling Wave has compared to other spirit generators, and reveals the entire reason why you'd ever want to use these other ones. But hey, if you want to suck at the game, be my guest.
By the way, sorry for not saying much in this blog these days, there's just not much to write about. I could make fun of the student strikers that keep digging their own graves, but the mainstream media already did it to death.