Thanks for putting that together, great write up!
Unsurprisingly, I have a couple of comments. :)
(1) It might be good to comment on the quality of support a distro has from it's support community options, such as forums, chat channels, etc; (2) The example of Debian Testing as getting quicker updates seems flawed; there are reasons, including security issues, why Debian SID might be the better choice there; (3) Do you even need the discussion on divergence, etc, here?