I suppose it all depends on how you specifically feel about the club/shield combo.
Non-lightsday, the club/shield combo with perfect augments will pull 1.5 power higher than the perfect staff equivalent.
Lightsday, the staff set pulls ahead of the club/shield combo by 1.5 power.
This however doesn't change during lightsday (or weather) for optimal max cure... we'd prefer to use korin obi and twilight cape for the additional day/weather bonus;
The staff set (collossus'/zenith) changes as such:
back to twilight cape [-4% potency, -4skill, gain day/weather boost]
waist to korin obi [-5 skill, gain day/weather boost]
neck to Phalaina locket [-7 skill, +3mnd, +4% potency]
>Net worth: -16 skill, +3MND, 1.5 day/weather boost.
Set drops from ~103 power to ~88
The tefnut/genbu set changes as such:
back to twilight cape [-4% potency, -4skill, gain day/weather boost]
waist to korin obi [-5 skill, gain day/weather boost]
hands to augurs mitts [-10 skill +4% potency]
>Net worth: -19 skill, 1.5 day/weather boost
Set drops from ~105 power to ~86
Seems that when the sets are modified to take korin obi/cape into account, it still sits ~2 power ahead.
So under perfectly ideal situations, the club/shield combo will cure stronger by an exceptionally small amount on average (when you factor in 1/8 day chance and the scarcity of light weather).
Sidenote: Personal mileage will vary.


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