How can we forget the Champion's overwhelming 7th Level ability ...
Remarkable AthleteStarting at 7th level, you can add half your proficiency bonus (round up) to any Strength, Dexterity, or Constitution check you make that doesn't already use your proficiency bonus.
In addition, when you make a running long jump, the distance you can cover increases by a number of feet equal to your Strength modifier.
Since you're already proficient in Strength and Constitution checks as a fighter It boils down to +2 in Dexterity checks and jumping an extra 4 or 5 feet(assuming you are a Strength based fighter).
That is power.
