Sword/ dagger/ axe/ mace is not balanced

I think it has something to do with skill diversity and the usage of different weapons for each skill. But in anycase I don't understand why rapiers implicit mod is crit multiplier, and not accuracy. And the talent tree's crit nodes for swords are really crappy.

for instance this

http://www.pathofexile.com/forum/view-thread/313490

372 dps crit and accuracy more and more

who did design this a small shitty thing can deal the highest physical damage?

Yes, rangers, that is a powerful dagger.

It doesn't deal the highest physical damage. I personally have seen a 400dps+ sword. Sure, its rare. But that dagger is damn rare too.

Those exact same rolls on an axe for example (which can roll them too), would result in a much stronger axe (albeit lower crit chance, but no crit rolled so meh)

AFAIK all melee weapons are able to roll the same phys rolls. So those mods that make daggers get 350+ dps, sword/mace/axes can get them too. And with better base damage, their dps is higher.

Also, dagger being a hybrid melee-caster weapon, it can roll more modifiers than swords, so it's harder to get a powerful melee dagger than a sword.