[mianos]

In the "Other thoughts/notes" he acknowledges all of the tested software was old. (And it being I/O bound). The whole thing is more of "this is kind of interesting, you should do this test", than hard facts. I'd do it myself today but I have a busy one.

[mscdex]

That doesn't answer the why though. It just makes it seem suspicious. How hard could it have been to use the latest versions of the non-Postgres software? Even as a "this is kind of interesting" experiment it seems like you'd have to go out of your way to install such old versions.

[taf2]

I could be wrong but it seems like on any recent Linux distro it would be harder to install these older versions… doubling the suspicion factor for me at least