Am I out of date? I thought that current big deep networks had 100's of millions of parameters, where as mammalian brains were of the order of 10's of billions

Am I out of date? I thought that current big deep networks had 100's of millions of parameters, where as mammalian brains were of the order of 10's of billions of neurons with perhaps 1000 times more connections so giving 10's of trillions of parameters (if you imagine a mammalian neuron to work like that).