* Mr Prabhu had little organisational responsibilities and Mr. Goyal have much more organisational responsibility & involvement, so Mr Prabhu devoted maximum time to Ministry of Rlys. Mr. Prabhu is a known workaholic and I don't think IR shall ever get such a dedicated minister.
* Mr. Goyal is taking up the right and important issues which Mr. Prabhu could not properly address- like review of flexifare, review of loss making projects, emphasis on track renewal to arrest the accidents, review of loss making trains, tightening of IR bureaucracy/wasteful expenditure like restricting usage of saloons etc.
*...
more... As Mr Goyal has wisely stated that he will continue with all the good policies and intiative take by Mr. Prabhu. He has to keep these words in order to ensure his success.