As far as this discussion on GS-mini is concerned, the wind speed for insertion into the PERF page is always the mean wind speed. Inserting a gust speed would increase the Vapp by less than it would decrease GS-mini. That in turn would result in lower managed IAS readings throughout the approach
That is correct. If you put higher wind in PERF you reduce GSmini protection. But pilot can add to Vapp. Upto 15kts is permitted.