Really interesting discussion here.
These are some lines from Moz’s own blog: “Domain Authority is designed to be an indicator of success (more on that in a moment), but it doesn’t *drive* success. DA is not used by Google and will have no direct impact on your rankings. Increasing your DA solely to increase your DA is pointless vanity. ”
Google has officially cleared that they dont look at DA as a ranking factor. I look at Moz DA for my websites to know how am I doing. Since Google has stopped making Page rank public, we need to know that all the hard work that we are putting into our websites are giving us some results.
For a page to rank in a SERP, 2 things would matter mostly: the back link profile and the quality of content.