Currently, the main challenge in making human like or better intelligence is not in processing or detection of stimulus, it's in perception. So many signals from our senses don't make it to our direct attention. It is easy to add a camera to a robot, but it's hard to tell it what to pay attention to
A.I 'consciousness' is very basic, it only understands what we call sensual data. Human consciousness however is subtlety but vastly greater. It is expandable and shrinkable. It just isn't completely understood by science and probably won't be for a very long time.
Artificial Intelligence will be created by humans, and cannot exist without us. AI will simply be a tool that we invent to benefit the human race. If humans were to disappear, AI would have no use that would be relevant to anything else in existence.