This is true (well, not 1080p) but I have a thermal scope for my rifle. 640 OLED is incredibly crisp and less graphics intensive for eye level devices. I would imagine it's a balance of graphics processing speed and what you can push into a small screen of that size.The resolution is quite low on both these glasses, now we are spoilt with 720 or so resolution.
Yes, they work well on the vision app. The sun is no problem at all. I mostly use them with iPhone 5S because the image is slightly smaller off the iPad mini.I would guess you would have to to see anything on the display.
Fplvert, have you tried your cinemizers with your iOS device and a HDMI / lightening adapter ?