I do not see how?
The title implies human are <= other lifeforms on the planet.
Unless you are talking about my disbelief about human intelligence and progression(We are no more intelligent than 16th century).
Then your just wrong. Our mean intelligence is far greater than 400 years ago. As a species, not just socially!
It is clear that a primates brain size is predetermined by the size of the group. My theory is that this effect has 10x since the invention of the internet and social media. Freely available information is creating the foundation for new neural pathways which will be clear to see in future generations.