Grace Marking in Board Exams

What's it with this grace marking system that CBSE and possibly other boards follow? There was a decision taken by the board recently about no longer giving grace marks. While on the face of it this is a good decision, as it means students will really get marks as per what they have answered in the exam and not get extra marks, which helps boost their results, but was it really so? 

Delhi High Court has ruled against it and for all the valid reasons. However this raises a few questio...