The analysis is weak. "There were 10 images where all three APIs got it wrong".

Guess what. Zoom in on the "PRINCE" image, and you'll see it says top-right: A MIKE NEWELL FILM. So... both google and AWS did a nice job. It's not reasonable to expect PRINCE as the outcome.

The point another person makes below about "payloads" and MSoft is valid too... As is the g-accented (not recognized because UTF codes not processed).

Makes ya wonder.