And how do you know the plus won't use its OIS for video too? As far as I can tell, nobody knows yet. I'm hoping it uses the OIS--since its usually way more effective than electronic stabilization.
"Cinematic Video Stabilization
The iPhone 6 series's new Cinematic Video Stabilization is essentially automatic still image stabilization applied to video capture. It's not yet clear whether the iPhone 6 Plus's optical image stabilization system will be used to augment the software stabilization algorithms, and likely will not be until tests are performed following the handsets' release."
http://appleinsider.com/articles/14...ne-6-plus-are-a-boon-for-mobile-photographers