Triglav's freeze is NOT an absolute upgrade.... when you use sudaruska, you can just smack stuff around whenever, wherever, however... as long as you take advantage of the knockback, which will save you from many melee attacks, making you much safer. When you use triglav, this is not the case- using the second hit on the front side of an enemy can freeze it, canceling the knockback and allowing the monster to get in an easy hit.

So why would you want to deal freeze? What advantage does it actually grant you? It lets you get in charge attacks. With triglav, you want to plan second hits such that they strike enemies safely as often as possible. Whenever you do get off a freeze, you want to step away, and get in as many free charge hits as you can- which can be a good many hits, given that triglav also freezes on the charge quite often.

This difference gives each weapon a vastly different feel when using them, and was one of the things that inspired my post about armor balance. My thoughts on these two weapons and others, as mentioned in that post, are that the odds of status could be raised tremendously to further differentiate these two items, balancing them via removing the comparisons between the two.

Specifically-

Sudaruska's 2nd hit: Twice as fast as triglav's
Triglav's 2nd hit: Always deals moderate freeze

Sudaruska's charge: Always deals strong stun
Triglav's charge: Unchanged

That's all it would take to fix them and avoid having them be basically the same weapon. Neither weapon is or ever has been valued much by the community in general so the buff would be seen very positively as well.