Are powder skis harder to ski than all-mountain skis?

In deep snow, powder skis are actually easier to ski than all-mountain skis because they float instead of dive. On firm snow, they are harder to ski because they are wider, heavier, and less responsive edge-to-edge. The challenge of powder skis is managing them in mixed conditions, not in their intended deep-snow environment. If you only ski them in powder, they are more forgiving than narrower skis.