computers are way smarter,or way stupider than humans depending at how you look at it.
a modern computer can do operations at a speed humans could never match, our brains dont perform calculations like that, they just cant.
a computer is smart in that sense
but a computer could never make abstract descisions or come up with ideas like a human mind can, it needs rules and order.
emulating this type of intelligence isnt efficient, and doing it wouldnt be the right way to go about it. youd need to invent a new type of computer imo.
comparing computers and brains is like trying to make a car walk, it cant really be done. its a task which needs a device designed to do it for it to be possible.
a rat isnt extremely processy, running all the neurons and such through a computer is. a rat only thinks about food, water and safety, it will only need to interpret its vision, the only difficult task, which cant be done by computers right now since no easy way has been created.
i dont know but AI is a long way off, autonomous robots arent ai, they just do predeterminded stuff based on a few situations that they know of. a real AI would need to form ideas for itself, which computers were never designed to do, all they can do is move numbers.