There's not going to be any difference, because, surprise surprise, turning off Bluetooth on Android actually doesn't turn it off, it just disables any communication over Bluetooth to any app. If you don't believe me, I use MyPhoneExplorer to synch my phone with my Windows work PC outlook, and if I trigger the sync whilst forgetting to turn on Bluetooth on my phone, the display off my phone wakes up anyway. Go ahead and find out for yourself. Yes, Android Bluetooth toggle will not actually turn off the Bluetooth radio, perhaps transmit (I don't have the means to really test that), but certainly not receive.