I don't think we can claim that by any stretch.
We are extremely sensitive to our own differences. But humans are by and large very, very similar when put in perspective of all life.
Ofc, it's a spectrum. And as we evolve we go from being more nature based to being more nurture based. But I'd say we're a long way off from being more nurture than nature, given that 100% nurture would be a being fully capable of self design. Most people can't even stop themselves from procrastinating (like me right now). We can't even manage to coexist with the planet, when we know it's going to destroy everything when we don't.
If you want to believe that us big great humans are in control of ourselves and unlike those stupid animals we're products of nurture, that's your dopamine hit to take. But based off everything I've seen, the only time we really become our brains is when the the Pre-frontal cortex is engaged and suppresses all the other more instinctual parts of the brain. And even for very smart and/or dedicated people, it's extremely difficult to quiet all natural instincts for any extended length of time.
IMO, we're barely out of the bushes in terms of the path from being beasts of nature to becoming beings of self-design and nurture.
This is how I feel about most situations where someone tries to claim they are good and the other is bad. To me, it's really just that one is lucky and the other is not. Neither is substantially more aware of their own cognitive shortcomings, and -- even when they are -- that's a form of luck as well.
Of all the privileges in life, I think the last I'd be willing to trade is sanity. And sanity is basically just more or less fallacies per thought.
I'm tired of the words "good" and "bad" being applied amidst people who are all running the same OS.