I really don't understand how they came up with the _exact_ same image. This goes against my previous understanding of how these technologies work, and would appear to lend credence to the "they just regurgitate training material" argument.
Pretty sure they didn't come up with the same image. Images 1, 3, and 4 are the three images the GP generated and they put the Imagen-generated image (2) into the set for ease of comparison.
Ok yes if that is the case then it makes much more sense.