The Devoted Challenge feat from MP makes dwarves the very best class for fighters[1], since they get their wisdom bonus when enforcing their mark. That makes their lack of a strength bonus irrelevant to doing what a fighter is meant to do: make the opposition pay for ignoring your mark. Unfortunately, the Polearm Master feature Longarm Grasp does not get the benefit from Devoted Challenge. Also, if you're wielding a two-handed weapon, you won't get a shield bonus for your AC and Reflex defenses.
You might also consider playing a FightbrainBattlemind from PHB3, since Con is their main attack stat and one of the class features uses Wis as a rider.
[1] Assuming you're playing a fighter to defend specifically with the Combat Challenge class feature.