I thought I might have got it wrong but why have screenshots of that point - are they surmising that he cross checked one against the other and then selected Runway HD as his choice?
It may be an artifact of how the iPad does swapping between applications. It takes a screenshot when you move away from one app to another, then a double tap on the Home button shows a mini version of the screenshot.
So it may be one app was being used for a while, the last time the other was used was a few minutes ago therefore shows further east.