I specified watts of heating and watts of heat loss
It doesn't matter Iceskater.
If watts of heating is greater than watts of heat loss, thats not a reduction of heat loss thats heat gain for the surface so the surface will warm.
If heat loss is greater than heat gain even after you reduce it then and only then is it heat loss and the surface will cool.
It doesn't matter. Anyway you want to paint the picture you are wrong wrong wrong wrong wrong wrong!
The maths is enormously simple. If 1000W per square meter is applied to a surface then that surface will warm up until 1000W is removed from that surface.
If you reduce the amount of heat removed from that surface by 100W so that only 900W is being removed from that surface then the surface is being heated by 100W without a balancing amount of cooling, and must rise in temperature
1000WM2 of heating - 1000WM2 of cooling = Zero surplus heating available to raise temperature of surface
1000WM2 of heating - 900WM2 of cooling = 100WM2 of surplus heating available to raise the temperature of the surface
The surface must rise in temperature until 1000WM2 of cooling is re-stablished.