Outside the time frame of being able to edit my original reply, but I've finally re-run the Text-to-Image portion of the site through NB Pro.

  Results

  gpt-image-1: 10 / 12 
  Nano Banana Pro: 9 / 12
  Nano Banana: 8 / 12

https://genai-showdown.specr.net?models=nb,nbp

thanks for the update. One small note: for the d20 test, NB Pro had duplications of 13 and 17 too, not just 19.