I purchased both Street Fighter IV and Super Street Fighter IV: Arcade Edition before the Ultra Street Fighter IV came out on Steam.
The last time that I played them, there were separate games in Steam. Now, there is only Ultra SFIV and there is no SSFIV Arcade Edition anywhere, not in my library, not even in the Steam store.
I installed SSFIV and none of the extra stuff that comes with the Arcade Edition is in it. What the heck is going on?
The whole SFIV series is a little overwhelming, but the problem appears to be that you're getting Street Fighter IV confused with Super Street Fighter IV.
Street Fighter IV was released in 2009, and despite their similar sounding names, is a different game to Super Street Fighter IV (2010).
To make matters more confusing, Capcom released several updates to Super Street Fighter IV:
Super Street Fighter IV: Arcade Edition (2011) was the first of these (and itself had several updates applied to it known as '2012' and '2014', respectively).
Ultra Street Fighter IV (2014) is the latest update to Super Street Fighter IV.
So basically: Street Fighter IV is one game, and Super Street Fighter IV (aka Super Street Fighter IV: Arcade Edition and Ultra Street Fighter IV) is another.
From the image you've posted, it's clear that Steam has kept your original Street Fighter IV purchase, but updated your Super Street Fighter IV purchase to the new name: Ultra Street Fighter IV (they're the same game, after all).
With regards to your missing costumes(?), if you purchased the original game through Games for Windows Live, then they're not available once you've migrated over to Steam. You can still play your GFWL version without Steam, though. Read more here.
It's normal for there to be just one SSFIV in your Steam Library. I also purchased all the SF DLC'S and have one game in my Library.
The Ultra Edition is the last update and should be the default when you open your game. The others, like Arcade are not needed anymore because all the content is transferred into Ultra.
The only bug you have is that you can't see the "extra stuff". Maybe a reinstall will help or Verifying your game data in Steam?
