You need to look at who is executing authority of projects like RVNL have many projects in CR SWR SCR often RVNL doubling projects delayed not only in SWR but in CR but SWR itself making Doubling works where the speed of Doubling is faster than RVNL example Doubling Between Solapur Gulbarga, Doubling Between Hospet Hubli etc.. Where as SWR doing great work in Doubling compared to SCR and CR.