Have you the ability to compare the wall-clock running times of the tasks?
If I'd use the same client information (i.e. client_state.xml file) on two completely different machines (in this case even with different number of CPUs), I'll simply won't give anything about information such as benchmark or runtime. It may work to copy the whole BOINC directory to transfer tasks to other machines, but the Client isn't made for it and will most likely get confused.
BM
