I sweat a lot when I exercise. After an hour of running at medium intensity (~150bpm avg HR) in 20°C @ 50% humidity, I am literally drenched in sweat. I can wring my clothes and sweat will pour from it. It’s difficult to find clothes that are comfortable to wear for my long trips.
You don’t want the fabric to wick the sweat away, you want it to evaporate off your skin, which it does very efficiently, and take the heat with it. Wet cotton is an insulator and will make you overheat.