It will depend on what sponge filters as well as the tank. They can vary from great to useless. How large, how many and how they are powered will make lots of difference in how much mechanical filtering you get. Then there is always the question of how much each tank requires in the mechanical filtering. your tank looks like it has lots of plants which may reduce flow around the tank but then you may also have a bunch of flow from powerheads that I can't see.
I usually think of power filters as having more power and flow than sponges.