First off, why do you think you could predict what this supposedly superior brain would think, or conclude? And second, assuming it did think we were just another great ape, why wouldn't it do what we do - when we're not controlled by superstition, and the imagination that causes us to poach them for arbitrary, illogical uses.
Often, our imagination far succeeds our actual reach. The fear of us creating something that will eventually control us is purely an irrational fear, and is actually a good indicator that an actual artificial intelligence would not seek to do harm - because it would not be irrational. There is absolutely no evidence that anything other than our own nature will be a threat to us.
The possibility of us eventually building an AI that is both as stupid, irrationally fearful, self-serving, and potentially harmful as Donald Trump, is, at least currently, much less of a threat than Donald Trump himself. The biggest fear I have is that half of our country is insane enough to let him get this far. That's way scarier than a super-intelligent piece of software. At least the software won't intentionally upgrade its software in a way that would implode it.
We should also be worried about global hunger, rising sea levels, depleted ozone layer, toxic air & water, overfishing of oceans, clearing of forests, diminishing biodiversity, overpopulation, global economic crises, cyber war, and eventually, the sun blowing up. All of those I think are more realistic things to warn the populus about than a freaking AI mind gone cray.