Just as a non-scientific test I checked the voltage on a bridge connected to a V2 (4.80V) to a bridge connected to my Pan Cam (4.90V). I then set my Pan Cam to Pan Scan and watched the voltage, which dropped as low as 4.82V but quickly stabilized back at 4.90V as soon as the motor stopped.
So at least on my Pan Cam (which I do not use with a bridge normally) the voltage was actually higher than the V2 and never dropped below the V2 stable voltage even “under load”. 4.80V is lower than I expected but well within the 4.40-5.25V range of the USB spec.
