At first, I thought this was going to be a software idea, which would be exciting. The fact that it's hardware is even more important; this could mean faster-than-human parts in the not-too-distant future.
Of course, when your desktop develops schizophrenia, you'll wish for a classical processor.
Nowhere close, since the quotient you linked to is based on the processing speed and mass of the processing unit. The wikipedia articles uses 0.1 ugrams as the average weight of a neuron - this device, of purported similar processing speed, sits on a small pcb. Even if you threw out everything but the FPGA silicon, it's going to weigh a great deal more.
Of course, when your desktop develops schizophrenia, you'll wish for a classical processor.