Base less decisions!! Why befooling people!!
Today superfast as well as the normal express trains run at same MPS, which is normally 110 kmph (or less in case of speed restriction). So what difference it will make with respect to safety??
About a decade or 2 ago there used to be special speed (called A-special) for the real SF trains like TN/AP/Kerala, while they ran at 110 kmph while other express and some other superfast trains on same route used to run at 100 kmph speed. Today all are 110kmph.