generally this train does not gets late .its always on time it might get late for 20 min or 30 min so you have rush fast as soon you get down to catch ajmer shatabdi as there is a 1 hour gap in between both the trains so definitely you can catch ajmer shatabdi. but its just a matter of one bad day ,10% risk is still involved. better to catch other train in which you can get a gap of atleast 2 hours.so all the best