Guild Wars 2

They are the exact same skill and I can understand one of them bleeds and the other chills, but only the Ice storm on the bow got buffed, and the ice storm from the glyph didn’t. cmon… and the cool down on the glyph is like twice as long

Glyph of Storms also has 3 other skills available - Lightning Storm makes twice as many strikes, for example, so will give you twice the damage output of the Glyph’s Ice Storm (though admittedly still not as much as Frost Bow’s Storm, if all strikes hit).

The Glyph is there for multi-purpose utility - you get to select the skill it functions as every time you cast it. It can be cast in about half the time (including Frost Bow summoning) and also while on the move.

It’s much more useful for controlling multiple foes with chill/blind, or if you want to chain your skills together without having to conjure then drop a weapon. The conjures and glyphs both give elementalists pretty great versatility, but conjures’ single, powerful, un-swappable skillsets function completely differently from the 4-attunement glyphs.