Yes I know of the system you are refering to. It is used in Mel and some other ports. The main reasons for delays ex Mel are lack of manpower, but you would never know it looking at the delay reports.
Theorectically the system seems to be a good system if you have the manpower required. QF doesn't and in Mel, they are always manually manipulating the system to cope with the lack of resources. Both in Customer Service and on the Ramp.
There are a whole lot of other issues with this system, which are too numerous to write here.