lets go back to what ' wet bulb temperature means and is supposed to measure :
https://en.wikipedia.org/wiki/Wet-bulb_tem…
The wet-bulb temperature (WBT) is the temperature read by a thermometer covered in water-soaked cloth (wet-bulb thermometer) over which air is passed.[1] At 100% relative humidity, the wet-bulb temperature is equal to the air temperature (dry-bulb temperature); at lower humidity the wet-bulb temperature is lower than dry-bulb temperature because of evaporative cooling.
N.B.: at 100 % humidity , WBT is the air temperature , as there will be no evaporative cooling
therefore , at high humidity in a steam over , over 100 C ( 212 F ) there is no evaporative cooking.
your food , and the moisture on the food's surface does not evaporate , and the temp of the oven
determines cooking time , IE thermal transfer from the oven to the food
Infrared , contact ( circulating moist air ) etc.
Wet Bulb temps require evaporation , at any temp. above or below 100 C
in environments w 100 % humidity , at all temperatures , WB = DB temp
