First of all time and stopping stations matters...
Khyber Mail ----> 30 stations till Rawalpindi ----> 30 hours reported (36 hrs in actual approx)
Green Line -----> 7 stations only till Rawalpindi ----> 22 hours reported ( 95% reached well on time)
Secondly, free WIFI on all stations in Green Line.... Not availablein Khyber Mail
Thirdly, Free Lunck, Break Fast, and Refreshment in Green Line.....Not availablein Khyber Mail
Fourthly, New Bogi's of Green Line, which Khyber Mail Business Class are old one and refurbished..
Fifth, Plows and Blankets are Washed after every trip in Green Line while not in Khyber Mail....