Very, very confused by this....
I hope (& assume) that you are perceiving this incorrectly.
Powering the iPhone screen uses much, much, much, much more battery than pushing notifications over bt. Most likely, you are using the phone a bit more to tweak settings & whatnot in the Apple Watch app.
I seriously cannot wrap my head around this. I cannot fathom a way that could be possible. (Luckily!)
Can't wait to see a review where this is quantified.
*sigh* Anyone else here miss Anand??
I believe he means the constant Bluetooth connection is draining it a bit more. Not that BT is a huge battery killer, but you will see a difference if you have your phone linked to something for 16 hours a day.