You need to tell us ur EV expectation for low light.
EV 7 and below, neither will help u except tripod.
EV 8-9, F4 IS is better.
EV 10 and above, F2.8 is better.
But assuming you dont need
#1 Freezing
#2 Big aperture
#3 Only stopping shake
Both lense will do fine, just need a tripod.