Artificial Intelligence is snake oil – the biological sources of intelligent behavior are far more complex than any logical model we have of them. They're not just "neural nets", they have complexity and cause down to the molecular level in some cases – the spaces between the neurons, and the biology surrounding them, have important but opaque effects.
What exactly does as-smart-as-humans mean? Intelligence is very hard to pin down. One thing we do know about intelligence is that it is not one thing that humans or animals have more or less of. Humans have several different kinds of intelligence – all of which combine to make us human.