Scootaloo, according to your profile, you have one tank, one melee dps, and acn (so 1 magic dps and 1 healer) levelled to 50.
How are you able to say everything in each category work the same if you aren't experiencing them all to their fullest?
Not to mention you have no crafts at 50, so you cannot see that benefit either, I suppose.

Like I don't mean to call you out, but you should really try things out completely before complaining about them.