Let me explain a bit in detail. I will not be able to reveal the exact keyword and the website. Sorry for it.
I googled for "xxxxx xx xxxxxxxxxx xxxxxxx", and from the results, I found that the number one ranking has a lower PA, DA and less backlinks than the number 2, 3, 4 and 5 rankings. Also on page optimization is not great for the number 1 ranking page.
Am I missing something here? Are there other factors influencing the search result?