What is this class design of Dancer?

[Atlas-04]

Standard finish does not need 4 GCD's. Each step move takes 1 second. GCD is 2.5 seconds.

Standard finish is 1000 potency. Cascade is 200, Fountain is 250, using these 2 skills takes 5 seconds. Standard finish takes less time to cast than this and hits almost twice as hard.

Thank you for explaining that, I was away after posting so couldn't do it myself