> This result matches well with the few tests that have been done, which suggest that when it comes to pulling and jumping, chimps are about 1.5 times as strong as humans relative to their body mass. But because they are lighter than the average person, humans can actually outperform them in absolute terms, say O’Neill.
I certainly agree, you wouldn't have much of a chance against a chimp one on one without weapons. It's just that the article isn't about chimps, but about much smaller macaques.
https://www.newscientist.com/article/2138714-chimps-are-not-...