Because everyone Loves Parsers

[dragonseth07]

I don't even know if companies have been keeping the required data, or if they'd allow someone to study it to find meaningful conclusions (namely looking at Blizzard here, since they have the largest sample size).

I can basically guarantee that Blizzard has that data for internal use. Many online gaming companies have entire departments dedicated to analyzing player behavior and psychology. Riot games had at least one neuroscience PhD that would post on their forums from time to time when I last played LoL.