If the fabric of reality is a simulation, then it is just a transformation of actual reality. If the human brain could grow micro processor cells in addition t

If the fabric of reality is a simulation, then it is just a transformation of actual reality. If the human brain could grow micro processor cells in addition to regular brain cells, it could simulate a neuron using the micro processor to achieve exactly the same goal. If that is the case, what is the difference between a real human with a biological brain, a human with a cybernetic brain and a human with a virtual biological brain? Assuming they behave identically, there is no difference. A perfect simulation then is just a roundabout identity function. The only interesting consequence could be that unsimulated reality somehow differs from simulated reality.