Your corals can't do math. They don't understand LPH or GPH. What they do understand is alternating flow and high enough current to make most LPS or anemones unhappy.
I have been keeping SPS for as long as you could buy ugly brown frags that nobody knew what to do with. What I have learned is that Acros that show polyp extension are happy. When Monti's that most people never see the polyps on have polyps standing up and waving in the current they're happy.
There's a Sunset Monti on the bottom of this shot. I had it in that position for a month to acclimate it. It's now half way up the tank and has huge polyp extension compared to when it was in lower flow. The difference in numbers I couldn't being to tell you.
The blue torte frag middle left in this shot has tripped in size since I moved it to stronger flow, same PAR.
Since I made the SPS happy with the increased flow the RBTA in the middle only comes out half as far as he is in this shot.
It's all trial and error. Look at the corals not the numbers.