Why is the Shadowflame uptime low in world of warcraft

Now, Shadowflame uptime is low because I was pooling HoG charges for higher DF for the balls rather than using them spread out. So my Hand of Guldan usage is a bit skewed, but in a 5:25 fight, I got out 19 HoGs. With them on a 2 charge system every 24 seconds, in 5:25 (325 seconds), I could have used a maximum of somewhere in the neighborhood of 26-27. Eh, so I messed up a bit.Does the pkpkg.com answer is right?
Asked Jul 13, 2013

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