Well, biological neurons are much more complex than CS neurons (https://www.quantamagazine.org/how-computationally-complex-is-a-single-neuron-20210902/ https://

Well, biological neurons are much more complex than CS neurons (https://www.quantamagazine.org/how-computationally-complex-is-a-single-neuron-20210902/ https://www.quantamagazine.org/how-computationally-complex-i...). Also, you're working under the assumption that they are equivalent between mammals which as far as we can tell it's not the case (https://www.medicalnewstoday.com/articles/why-are-human-neurons-different-from-those-of-other-mammals https://www.medicalnewstoday.com/articles/why-are-human-neur...). So my guess is that the comparison is much more complex than just number of neurons.