[Zme]

the settings may not be the same,

from my expirence with windows xp's power management functions it allows you to set things like shutdown after so much time, sleep after so much time, etc. it may be that although these are identical the OS is changing the amount of processer power it is allowed to use on battery power, however i don't know an offical test to confirm this so this is just a guess.

on a closing note, our team uses the "Always On" power management scheme