AFAICS, the problem in my 9192 with battery drain are kernel wakelocks.
BUT it's only happen when the wifi is on.
At this time, I can see horrible number of "mmc1_detect" and "mmc0_detect" wakelocks. Deep sleep is only 73% then, and battery drain ~2,7%/h.
And, if I turn the wifi off, everythings return to normal: deep sleep is 96% or more and battery 0,5% per hour or less, with both simcards inserted and data on in 3G!
It happens on all AOSP based ROMs (CM, CARBON, MoKee) but on stock or "stockromlite v1.3" all is good.
So I presume, it's a KK kernel bug...