Is It a Duck or a Rabbit? For Google Cloud Vision, Depends on Image Rotation
I quite surprised at the comments on HN so far as nobody seems to see the significance of this. 
Yes, the image is ambiguous. 
The point is that Google Cloud Vision gives an unambiguous answer of that image based on the rotation. 
Transformations of an image are regularly used to improve the results of image recognition. That process fails quit dramatically if in the course of a transformation the answer given is presented with higher confidence than should be.