OpenELEC vs Windows

Hello,

I am choosing OS for my main HTPC where I need 3D, 3D ISO, BD ISO, bitstreaming. I have read some time before that OpenELEC does not have every features, but things could change till now... (For info I have HTPC with i3 3225).

Are these function possible on OpenELEC? (I suppose everything is possible on Windows 7 or 8)

- 3D
- 3D ISO
- 3D ISO with menu
- BD ISO
- BD ISO with menu
- bitstreaming

Are there any other functions or features for choosing Windows 7 / 8 against OpenELEC?

Thank you very much for your help.