Trained model with different predictions depending on platform

I have trained a model with CreateML. If I test the results with the Preview option that comes with the mlmodel, it shows me some preditions with a given conficence, but if I go through Vision + CoreML to check the predictions, for the same images, the confidence is totally different.

Here is an example of the output, console output is from the playground with vision + CoreML and the image footer is from the preview of the model itself. I have sent this model to a colleague that uses Coremltools in Python and the results are also different.

Does the prediction affect where you are executing the model on?