I've decided to disable juicedefender today to just see the effects it had..
results...
well, according to juiceplotter graph (you dont need to enable JD to use this)

Unplug time: 5.15 a.m
plug back time (batt 10%): 7.00 pm

so this day i got 13 hours 45 minutes
steep drop on 53% at 3 pm, other than that time its pretty flat, i dont really recall doing anything on my phone at that time, but I know i was out and about at that time in a hot day
The most important sign is that during that time the graph line is in red, it means that my battery is >36 degrees celcius, and I check everywhere, steep drop in battery % happens when the battery is in the red zone... and the most flat ones always in green zones ( 28 degrees and lower)

the day before with JD on:

unplug time: 10.30 am
plug back time (batt 17%): 1.15 a.m)

so i got around 14 hours and 45 minutes with 7% more battery
BUT, This is a less productive day than the next day, i believe i went to sleep at 3 pm (im a student got no class so sleep la lol) ;right when the graph showing green lines and it went fairly flat up until the night..
but i guess JD still saves a fair amount maybe an hour or so.. tomorrow im going to disable syncing of facebook as I dont find it important (gmail and other things is still kept on so we'll see how it goes)

Why im disabling JD?
well, I put speed and beauty above everything else, with JD on, i notice a significant drop in performance, i really hate that
I know its just 2 days of data but i'll gather more as time comes, and my belief at this time is that I can do without it

I encourage people who post "OMG wtfff the firmware update has drain my bAtt!!!" to post hard data as well, assuming that you already had Juice plotter app before the update and after, so we can all see and make inference from the data and not from hearsay/ placebo...