I've seen this "argument" made so many times on the battles forum that I decided to create this thread here and try to figure out what the legitimate argument actually is that supports this idea that Iron Man in Captain America: Civil War was noticeably and/or substantially weaker than previous incarnations, particularly his Avengers version. Too often I have seen attempts at low-balling the likes of Aldrich Killian, Cap, and Bucky by people saying stuff like Iron Man in Civil War and Iron Man 3 was much weaker than previous incarnations, therefore the feat of beating or competing with him is null or unimpressive.
So basically what I'm asking you to do (if you believe this theory yourself) is to make the argument here that Civil War Iron Man is weaker than Avengers Iron Man. You can use in-universe logic, scaling, feats, statements etc to support your case.
THE ONE CAVEAT: You cannot - CANNOT - use the Cap and Bucky vs Iron Man fight to justify the idea that Civil War Iron Man is weaker. This is the one rule for this thread. You must prove that the Iron Man suit was shown to be noticeably and/or significantly weaker throughout the entirety of Civil War, either by feats, statements, or logical inferences, not taking the final fight into account (as this is the most common argument I've seen made, and it is honestly quite the sketchy argument).