There Was Something Different About The Vatican Crowd In 2005
As the Today Show points out, something important changed during the 2005 announcement of Pope Benedict XVI and the 2013 announcement of Pope Francis.
We weren't completely sure that the first shot was from the exact same angle, so we did some digging.
The photos from below shows the view from the back of the St. Peter's Square as the new pope was announced (note that Pope Benedict was announced while it was still daylight, and Pope Francis was announced after dusk).
2005
2013
Here's another viewpoint, looking from the front of the St. Peter's Square back into the crowd.