Answer: There is a huge difference between them. As a matter of fact, Ramak explained everything from the perspective of the spreading of the light, whereas the Ari explained from the perspective of the correction of the Kelim, vessels, and desires. Since we are a vessel and desire, the system of the Ari is closer to us.
As for Baal HaSulam, he is like the continuation of the Ari; therefore, his writings explain the same system of the screens.
From the Kabbalah Lesson in Russian, 03/10/19