Are you able to get 2000+ ice/fire element though? The highest ice element hunting horn I see is the Lilim Glacia at 600 ice (compared to the Alatreon Revival at 780 dragon). Many buffs are percent based, which would raise the element of weapons with higher initial element a lot more than those with less.

Considering that Alatreon always switches to Dragon Active in-between Fire/Ice Active, it’s in Dragon Active nearly half the time; though you can prevent 2 of the switches to Ice/Fire Active via breaking the horns, it makes the Escaton Judgement check pretty difficult with ice/fire weapons if you fail to break them, whereas dragon element always gets the chance to pass the check in Dragon Active before Escaton Judgement (which is fairly easy with the high amount of dragon element Alatreon weapons have).