i agree that the brown bike is undersized for the rider pictured, and we can tell by the silly length of seatpost visible in the first pic.
Unless it was intended as a 1930's British Retro design in which case the "silly length of seatpost" would be accurate. I was amazed to see a Hercules R racer advertisement stating the only frame size, 20" with a 10.25" BB height, billed as a low and fast frame, it had what seemed to be 12" of seat post with a good 4" drop to the bars.