A small post to show my appreciation of this thread even if I usually have nothing to say about things here.
Windows versions of Stardew Valley is the same for both galaxy and offline installers.
It's probably fixed and will be marked as such on my next scan. I update the data every weekend, and it may at times lag a bit behind the actual state of things.
Windows Witcher 3 main installer is indeed 1.31 version but patch 1.32 is also available.
I'm aware of that, but my scripts only look at base installer versions.
Dragon Age Origins is a curious example because I believe that (A) in galaxy version just means cloud save functionality, so in essence this is the same version (since you don't need cloud saves if you're using offline installers without galaxy).
The content is the same (it was confirmed by someone from GOG a while ago), however the version numbers are different (1.05 vs 1.5). I hope it will get corrected one day.
Outward is a bit harder since devs don't use that numbering on steam or on wiki, but currently galaxy lists the version as 1.3.1b while offline installers are 1.3.1d.
The versions should be in sync now for Outward (at least the ones for windows)... and this will be reflected on my next update.