I think instead of just giving a score, GSMA should also give us the battery life in day to day cases. I do not trust the battery test tbh, especially considering that my phone (Huawei P10 Plus) got a 70-ish rating and it last me all day no matter how I use it (I'm a heavy user btw). If you want to know my usage, I wake up at 6am and unplug the phone, then I use it for texting, calling, watching Youtube, browsing the internet, Twitter and Instagram all day. Also I play games for at least an hour and a half. The phone comfortably hits 6 hours of SOT without any problem.
So I think that the U11+ will last all day long. Especially with a 10nm processor (kirin 960 in 16nm) and a light version of Android (EMUI is heavy) and 4000mah. Not to mention Oreo's battery optimization.
Battery life is truly shocking on first release: a near 4000 mAh battery, efficient 835 CPU and to top it off, really low screen brightness. Should be easily topping 90 hours in the tests, probably over 100. The tested numbers are awful. And then there is the screen brightness - absolutely appalling and makes the phone marginal in the summer sun - not acceptable for a top of the range phone. That said, the speakers seem to be world beaters. So if that matters to you, then go for it, but I would wait until they really put more effort into optimising the software and cranking up the brightness.
very poor optimized battery! Put this battery in note8/s8+ then you will see 20+ hrs video endurance.