[wyclif]

But they're still primates, and therefore presumably more similar to chimpanzees than humans in terms of the ability to model and learn behaviour.

[wizzwizz4]

Humans are primates, but we don't presume we're more similar to chimpanzees than to humans.

[krapp]

Humans share 96 - 99% of our genome with chimpanzees. Presumably the difference between human sub-species would be even less.