Flicker vs Cyclone?

It seems most builds that use flicker could easily switch with cyclone and still function the same or even better, so whats so good about flicker compared to cyclone?

Well, a properly geared flicker clears much, much faster than cyclone. In fact flicker is arguably the fastest clearing skill in the game. Of course cyclone is somewhat safer and more consistent in performance, so it's all up to player choice.

My disfavour cyclone has a 4l flicker + melee splash + faster attacks(need to rechrome to melee phys) which i use against mobs that tend to run away, like humanoids or monkeys, or just clearing the gap between groups really fast.