Are slings better than soft carriers for the Singapore heat?

In theory, it does sound like slings are better for the Singapore heat and humidity but there are plenty of soft carriers that are built for baby and mommy's comfort in tropical, humid climates. My best friend uses the Ergobaby Performance carrier. Ergobaby Performance carriers are a great choice because it is a buckle carrier that is lightweight, breathable and great for hot, humid weather like Singapore's. It also features a mesh panel that offers extra ventilation. http://www.lazada.sg/ergobaby-performance-carrier-ventus-purple-2439434.html