That's a screen resolution issue maya 2013 running on the bottom shot is at a much higher resolution than the maya 2011.
If you want the 2013 to appear to be the same size then drop the screen resolution, not sure why you would want to do this however i do believe that to be the problem.
David
From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"