Steam just tells the game to run, so you don't really need to check if the version is steam either; just if the version is the most updated. The only real thing that Steam does to the game is add the shift+tab overlay.
A good example of this is Deus Ex: Human Revolution. Winehq shows no Steam version for this game, so the latest version was chosen instead. The rating is also Bronze, however the comments show to add a patch and it works almost flawlessly except for a few shadow glitches as shown in this video. I can also vouch for this method since I was able to play through a bit of it perfectly (the only problem was my computer couldn't handle it, so it was laggy).