The amount of calories burned and thus heat produced by lean muscle is negligible compared to other factors in how much one sweats.
To the OP's topic, thankfully I don't sweat much even in the hottest conditions, so I voted no. I'll pop one on under a sweater once in a while when I'm bumming around the house, but it's never visible.
An athletic person is inherently going to eat more than their sedentary counterparts. The thermogenic effect of food makes a difference in sweating that is anything but negligible.