User Activity

I get different exposure measures between the top lcd on the camera and when looking through the lens. Through the lens is the accurate measure. What would cause the top lcd to be off?
I am attempting to move pictures from my Canon 5DMKll via iUSBport to my new Kindle Tablet to be able to view the photo's in real time. Is anyone here familiar with this? Getting there has proven to be difficult.
At present, Nikon is leading the way in hi-resolution cameras. When is Canon stepping up it's pixel count to compete?