Nexus 5 vs iPhone 5S Camera Shooting EXPERIENCE

I've seen some really great pictures produced by the nexus 5, and I don't doubt the nexus 5's capabilities to produce great pictures. I REPEAT, I do NOT DOUBT its capabilities. However, what I'm concerned about is the nexus 5's overall camera experience. Some things I'd like to see:

  1. Time to open camera app
  2. Time to take first shot
  3. Time to take consecutive shots
Perhaps to be comprehensive, this done in various light conditions, +/- flash, +/- HDR. Could anyone take a video of themselves snapping shots with the nexus 5 versus the iphone 5s?
This would be very interesting to test.