Strange since according to Dahua' datasheet, the sensitivities are:
IPC-HDW5442TM-ASE (IR): 0.002
[email protected] (Color, 30 IRE)
IPC-HDW5442TM-AS-LED: 0.0016Lux/F1.6 ( Color,1/3s,30IRE)
So I would expect the LED to have slightly better nighttime performance than the IR one.
Refs...