Street riding in the cold that's just not true. For me anyway. I have a PCV raincoat with a back vent and I've never gotten wet inside from condensation. It's not like I'm working up a sweat riding through cold rain.
Breathable stuff is nice when you're working up a sweat, and it might be nice when the weather is warmer. But when it's cold & wet, and I'm riding on the street, give me vented PVC over breathable stuff. I've even had vented, non-breathable stuff outperform breathable gear for bicycling.
I've had breathable moto raingear too. Worn over textile riding gear, the coating on the inside wore away eventually. Maybe it would have lasted longer over smooth leather. Maybe a lined unit would last longer--just like in the original question about the R3 vs Classic.