In a Basic Game, I think the Champion holds his own with the thief, the Evoker, and the Life Cleric. But stacked against the Paladin's smites, and the Ranger's Hunter's Mark & Collossus Slayer, the Eldritch Knight (and probably the Champion) felt underwhelming. It was a tough character, best AC, and could pull out the occasional AOE like Thunderwave, but the damage of those AOE's wasn't impressive. An Adrenaline Surge once every other combat just didn't have the oomph that Smiting and Hunter's Mark had.
However, the Battlemaster looks like it can compete with the Paladin; Expertise dice, refreshing on a short rest, are usable about as often as the Paladin's Smite. So it looks like, if I wanted control over exactly when I bring the pain and on what, I was looking at the wrong subclass.
I just wish there was a way to get the Champion's 7th level athleticism ability on the Battlemaster.