Output Power 5 Watts / NetMetal Questions

We used two of the new netmetal AC routers:
http://routerboard.com/RB922UAGS-5HPacT-NM

Everything works great. From the specifications i saw that these boards supports 2Watts output power. When i set the rate to all card fixed with the help of the GUI we are able to set the maxium power to 37dbm which is 5 Watts.

Is this a bug in the GUI or are they able to allow a maximum power of 5 Watts when there is no country or domain regulation activ?

I would also to understand how does the board splitt the output power to the 3 mimo, is it maxium divide thru the numbers of antennas? So that a new netmetal send and receive 2Watts/3 Mimo = 0,6 Watts per RF module?

Thanks for any help.
Tommes

Have you measured the power? I suppose it is just value that can be set but has no real effect.