I have one of each class and I am playing fighter now and got to say if you were to take any of the other classes at the point my fighter is at and had them at the same exact point, the fighter would still underwelmingly performs. Even the cleric in devout build can handle mobs better and deal more damage than the fighter. I hear players say, the fighter just needs better gear. But this isn't the point I am making. I am saying (repeating myself again) if you were to take any other class and put them at the same point as the fighter, the fighter would still under perform. If you want to say that the fighter is more meant to be a party tank, then soloing is what? I have tried to experiment with using different encounters, thinking it might just be a very particular encounter load out, but it doesn't seem to help, in fact in some cases it makes the fighter even worse.
This might all sound like complaining, but like I said, I have one of each class and the condition the fighter is in, it makes playing it far less desirable because getting through solo dailies is a pain. I think the only players who put up with this, don't know any better because all they play is the fighter. They aren't even aware of how much easier you can get through solo content with any other class.
I mean this in terms of constructive criticism. Its not like I'm crying about my favorite class being weak. If the only metric for determining if the classes are balanced is using end game statistics, you have completely missed the part before that end game. I am talking from player perspective of playing each class through all of the content. The fighter just doesn't live up to it's name.