Retina Macbook Pro doesn't hibernate

I have bought a 13 Retina Macbook Pro -my first Mac, just a couple of days ago and I found something odd.

Apple claims that after an hour or so of sleep, the Mac should go to deep sleep -AKA hibernation. Well, yesterday night I closed the lid and the Mac entered sleep mode. The expected behaviour according to Apple is that when I wake up in the morning, the Mac would turn on and load the RAM image from disk back to the main memory, taking many seconds to wake up. Instead, it woke up immediately -like if it never entered hibernation.

1) Why doesn't my MBP do what Apple claim it should do when "sleeping"?

2) I'd like to have the hibernation mode active. I love that my computer turns on sooo quickly but if I'm not going to use it for many hours, I'd prefer to save battery with a (slightly slower) boot.

I already tried to change the standbydelay and the autopoweroffdelay to little numbers like 1 minute, 2 minutes, 0 minutes, 120 seconds, 60 seconds (standbydelay uses seconds, autopoweroffdelay minutes according to pmset man).

I don't have any USB connected, I turned off iCloud and Google sync.

I saw the pmset -g assertions to see if there's some daemon or app or service preventing the deep sleep. I changed the hibernatemode from 3 to 25, and back to 3.

And yes, I read the pmset man and tried virtually everything I read on the web.

The Mac keeps entering sleep but never deep sleep/hibernation.

I tested everything. I'd like to have more control (or SOME control) over when and how MY computer goes to sleep/hibernate. Thanks in advance!!