Re: Review up on GSMArena
well, looking at the numbers given (s5 # in parenthesis),
talk 17.5 (27.5)
video 10.5 (11.25)
web 8.75 (9.5)
rating 64 (83)
If I use 2.5 day of talk/video/web battery consumption for s6 (because 48<64<72) and 3.5 day of talk/video/web battery consumption for s5 (because 72<83<96), I can deduct the standby battery life as follows (relatively, roughly, as I don't have time to figure out more precisely the formula they used):
s6: 0.52%/hr
s5: 0.23%/hr
This is significant. As bad standby can be improved. Through rigid and careful care, users can improve standby battery to same level as s5. When that happens, the rating can be changed to ~75. Though still not as good as s5, it is much improved.
So my preliminary conclusion is, s6's battery performance is hampered by bad talk time and bad standby time. They can be alleviated to certain degree. Disabling sync, turning off data when not in use could greatly improves its battery performance.
btw, it would be good to check its OS's version, It is known that Lollipop 5.0 may have bad standby problem, it is possible a 5.01/5.02/5.1 update can be pushed right out of the door and improve standby to some degree.