It changes completely since the stub is full floating and dependent solely upon the strength of the splines and shaft to transmit the torque to turn the wheel.
Fun fact- we actually made a set of stubs to fit unit bearings long before they were a product. We took a set of Warn 30 spline stubs, annealed them, had them machined to match an OEM stub and then had them heat treated again. My buddy didn't want to do a hub kit which is the only way we could get stronger shafts early on.
That clamping force is why we see more than a few RCV stubs twist off. Oddly, they called out a very low torque number for the spindle nut, something along the line of 100ish ft lbs. That isn't enough to provide the friction needed so they twist off inside the unit bearing.