At least read the abstract before commenting, man...
Table 1.
Wi-Le Energy/packet: 84 uJ
Wi-Le Idle current: 2.5 uA
BLE Energy/packet: 71 uJ
BLE Idle current: 1.1 uA
You can see this from Figure 4 as well.So, like I wrote, Bluetooth consumes less battery.
In addition there are unsolved issues, which are likely to add to the overall consumption.
Edit: formatting
Line from right above the table so it could possibly go the other direction and use less.