Konosan, thanks for the analysis... It has been confirmed by many panel physicians, including mine, that medical exam for TRV visa and for PR is SAME, so that is not an issue...
I agree that the issue is assessment of the results - it is clearly stated in rejection reason. However, assessment should be defined in EDE/Non-EDE field, and for PR only Non-EDE makes sense since it is more strict assessment.
What is weird is that rejected people were all Non-EDE, and I am not sure how the medical personnel at CIC could possibly make such a mistake. Additionally, medical results are being sent by panel physicians to CIC, and we do not have control over that aspect too - maybe there is separate way of uploading results for TRV and PR, and that could be the reason if panel physicians uploaded it on wrong place.
Other than that, the only explanation for me is CIC personal incompetence.