At least at low levels. Every combat so far was absolutely carried by our parties fighter just beating the enemies into a pulp :)
Fighters are so good, they're basically the Champion subclass of 5e, but their expanded crit range is also an expanded hit range, twice as big, and scales with every accuracy buff and AC debuff you or your team puts on your enemies. Team up with a bard and you've got something stupid like a 12-20 crit range on on-level enemies. Team up with a wrestler and you've got reaction attacks to ply that range on.
They are also simultaneously the battlemaster fighter, eldritch knight, and whatever else you want to tack on if you'd like, or none of them if you want to keep it simple.