Patrickt,
You are using the same differential cover that I am using and they have a little longer breather tube than the original that I posted the photograph of. It really does not matter what is inside the differential as far as gearing or the type of carrier the gears are attached to, the pumping action that causes the fluid to be pumped out is the ring gear spinning and whipping the
oil against the inside of the differential cover. Because there is no baffle at the breather hole the fluid is forced into the hole and travels to the breather can where it fills the can to the point it spills out of the can. The temperature of the fluid is not the reason for the
oil being pumped into the catch can, although the
oil does become more liquid with heat.