I'm A Banana
Potassium-Rich
This kind of focus on twit-for-tat is (still) missing the point. What the champion gets on top of what every fighter gets is the ability to do what any fighter does with simplicity. Much like the wild mage gets the ability to do what every sorcerer can do with random tables. And the thief can do what every rogue can do with super mobility. And the abjurer can do what every wizard can do with upped defenses.What is the champion getting in return for doing the least damage of every fighter type?
If it meets the threshold for DPR that a character needs to hit, it's not a trap choice (those, by definition, are choices that don't work). That'd be like calling the Paladin a "trap choice" because it can't heal like a life cleric. It's not a "trap choice" just because it doesn't have numberwang. Again, with some feeling, "I don't do enough damage" is not the same problem as "I don't do as much damage as other PC's." Showing the latter isn't evidence for the former.
If DPR is what you need in order to feel like you're not screwed, that's fine, and maybe you shouldn't choose the Champion, but not being the princess of DPR doesn't mean it's a bad option.