They have no importance. No search search engine use them as a metric in their ranking algorithms. (.... now sits back with popcorn as threads on DA and PA usually bring out so many clueless morons)
People look for high DA and PA networks hoping they will make their sites/pages more popular, but good content of the page is much more important than measuring the page's strength and popularity. To me, DA and PA is an arbitrary metric and doesn't have any impact on your ranking. It's more of a visualization for people to see what kind of backlinks they have, although not always correct.
Every tools has a different features which leaves different impact, services provider and customers may consider as a valuable result but no any concern of PA, DA in respect of Google .....
Domain authority is a measure of the power of a domain name. Domain authority is based on three factors: Age, Popularity, and Size. Page authority (PA)describe the probability that a specific page from your site will be found on the search engine.
What a load of total bullshit. DA has NOTHING to do with age and size and they are not used in the DA calculations As I said above:
What a load of nonsense!! As DA and PA are NOT used by any search engine to rank sites, how can a site rank higher if the DA/PA is higher? Care to explain all those websites with lower DA/PA that rank higher than sites with higher DA/PA?
why not do more research on moz? google discontinued pagerank because of abuse, then moz came along to predict DA/PA, and it is only a prediction to what your actual page rank maybe, and only google knows what your actual page rank is, since DA/PA is only a prediction, then your actual page rank maybe higher or lower then what moz DA is predicting, so rather then wasting time looking at DA/PA that may or may not be even accurate, maybe you should focus on quality content, and authority backlinks, and follow google guidelines on best seo practices, if something is going to happen, then it will if not, then it wont... looking at your DA/PA like an unemployed pedophile will not do anything for you.... and you should focus your efforts on things that really matter.... I have a site that has DA20/PA31, and it does not make shit... so DA/PA numbers are pretty meaningless at this point, and this site may not start making money until well into next year.... people treat DA/PA as gospel, when in fact, it is more like false gospel.... so following DA/PA in a regious manner will not make any difference....