Apple does need to increase the 10 hour battery life I feel like they haven't tried to improve the battery life very much, 13 hours does sound better.
I am curious on how Microsoft managed to increase battery life so much. Is the Kaby Lake processor that energy efficient? Was Microsoft able to put more battery inside a similar form factor? Is Microsoft considering this battery life running Windows 10s and not regular Windows 10?
I guess we will only know for sure when the reviews and tests come out. But 50% more battery life is, wow, a lot!