You can also count the sections, and see that the picture only goes back to about the point where the “viral” image shows the crowd petering out. It’s entirely possible that the sparse groups of people that can be seen in the earlier photos in the sections further back were able to move in closer to fill in space.
In either event, there’s been a clear statement of the time of day of both pictures in the original comparison photo. Haven’t found the timestamp for the gigapixel image yet, so a good comparison is difficult…
