RailFanning is a gift you give yourself. - Varun

Yep,SG got the priority from inception but not upto that extent that it can go on to Overtake any Rajdhani or make a Duronto trail behind..I admit that SG is very tough to Overtaken in present scenario but still it gets Overtaken whenever SK clears ALD with min delay because it's her scheduled OT..so,there is no point to discuss on that..
It seems that you don't no anything about SK..SG,Sapt Kranti & Sampark Krantis are Non Stop/Less stop concept of then MR Nitish Kumar and it was derived from the success of SK only (Fully Non stop train of that time,PNBE-NDLS-PNBE,one of it's kind)..It was one of the few trains which used to skip ALD at that time (Later came Sampark K...
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& halts of VS were removed)..Also it had the official MPS of 115 kmph in NCR with CBC coaches..And the current TT of 12394 at 130 MPS is same as that of 110 MPS but still it used to be a very puntual train with OT of a dozen of M/E/SF and frequent early arrival at PNBE..But with the introduction of trains each year,the ALD-MGS stretch got over saturated and it hit SK hard and with very aggressive schedule,the TAT @ RJPB was insufficient to save it from frequent rescheduling..Yes SG had the luxury to avoid ALD-MGS & upto ALD even SK used to run the same or even better than others..That's why some members call SK The Reschedule King but at the same time,their fav SFs can't even touch her..lol