There are two different type of battery consumption pattern:
1. When tethered to your Samsung phone via BT. In this mode, cell radio and wifi are turned off and the battery consumption appears to be better unless your phone have problem with the BT 4.0 LE connection. IIRC, if you set mobile data always on, it may still have cell radio on.
2. When you no longer connected via BT. In this case, your cell radio and wifi will both be on. If wifi is on and connected, it will turn off mobile data but your watch will still connect to cell tower for phone calls and SMS to the watch's number. In this mode, remote connected or not, the battery consumption is much higher. I can literally watch the battery meter drop.
So, make sure you listed how much time your watch is on each mode when comparing battery life.
Yesterday, I have the about 3 hours in remote connected mode and rest is BT tethered. My battery life is about 12 hours before it dropped to 6%.
Today, I'm going to turn off the motion gesture for watch face and see if there is any difference. So far, it seems fair better while remain BT tethered.