Has Ms confirmed that the os takes 3gbs or you just basing it on rumors from that site? lol

That's a disaster waiting to happen if you ask me. If its anything like Windows, it will get slower over time. 
Wouldn't having 3 OS running at once kinda like triple the error rate or even caus e lock ups if one of them malfunctions?

Microsoft are good, but they're not THAT good. I expect some issues at launch jus tlike the Wii U had.

They've confirmed it to Game Informer. http://www.gameinformer.com/b/news/archive/2013/05/21/the-tech-spec-test-xbox-one-vs-playstation-4.aspx

Even if Game Informer didn't have an article up, we've seen the leaks and they've ALL turned out to be true. Just because you don't like it, it doesn't make it false. VgLeaks is the source of all the leaks and they have an excellent track record.

So PS4 will have FASTER and MORE RAM available to developers. 

Let's not get carried away with that 3 OS thingie. Both consoles MIGHT have a maximum of 2 os running. You need a different os for different processors. On the XBox One side, we apparently do NOT have backward compatibility hardware, so no Xenos processor. On the PS4 side, there is the rumour of an ARM processor running certain things (like "Share button" and "Sleep mode"), so this second processor would need its own small os (beause the proc has different microcode). Nothing is known how XBox One runs the sleep mode, so they might get away with the single Jaguar chip.

Now what could they have meant with "running 3 os at once"? Well, the WIndows8 kernel and os stuff is a task that needs to run at high priority, the Kinect2 stuff is another tasks that runs at high priority, and a third task is the "housekeeping stuff". The Kinect2 task is probably idling often, as generating the depth field no longer takes any processing time away from the cpu/gpu. I'd guess the "3 OS" thing is sinply the three key tasks which probably block 2 cores on the XBox One. Same with the PS4, os tasks and "Kinect2-look-alike" task block two cores (with the latter one keeping one core fully working).

And if the PS4 wants to (most likely already does it) mimick what XBox One does, they will obviously also need the ram to do it, so don't expect 7G of free ram in the PS4.

Yea, it does sound like it could be a potential nightmare.  No one makes the perfect OS.  I expect Sony to have a few hiccups at the start, too.  But to keep track of 3 OSs, 2 of which (if not all 3) will be running at the same time.  I don't know.  Just sounds like chaos waiting to happen, to me.

The PS4 will be the most powerful, XboxOne will be a leap compare to the 360 ,but Microsoft is going to go with Nintendo tactics and go their direction with the console with all the features it have, same with the Wii U. This gen is going to be fun :3

I feel both the XboxOne and PS4 will start slow just like the Wii U then pick up steam few months in.

To avoid the bottleneck generated by the slow DDR3... that is the main purpose of the eSRAM.

Nice try, DDR3 is not slow RAM.