question Which Page Rank website is more accurate?

[juanforce]

Hello,

I have read an online article about Page Rank on one website where they have also mentioned some websites to check our Page Rank. I have checked Page Rank for my website. I was shocked when I compared all the website's results. All the results vary from each other.

I have checked on following websites:

Checkpagerank => 3/10
prchecker => 5/10
dnschecker => 4/10
smallseotools => 4/10
searchenginereports => 4/10

So, my questions are
Which tool is more authenticate and trustable?
Why all the tools are showing different results?

 

[lock]

Not even a thing really anymore as pagerank is gone all really DA domain authority these days.
Still see ads with PR but there are using probably similar algorithms to rate or make it up.