I've played through all of the classes in EA and so far the weakest has been the strength based fighter.
Wholeheartedly disagree!
I play SOLO with 656/1 hours and counting and I assure you, Fighter, specifically Battlemaster, is one of the strongest SOLO builds currently in the game. And if one can solo the current game with a Battlemaster, in full party, Battlemaster is beastmode. The ability to place Frightened on a target/enemy is just so incredible and devastating if it lands. Don't need no throwing weapons when you have the outright ability to use a +1 Heavy Crossbow, one of the best ranged weapons currently in the game, hands down.
