Wow that's nuts, do you have a link to the article? I definitely trust Anandtech, but anecdotally my experience has been vastly different, and that is WITH wifi use. I'd say the ip5 battery life is fair to poor, and that's over 3 different iphone 5's I've used. The battery life on the G2 is outstanding, truly bordering on being the best battery life of any phone I've ever owned. The only one I think might beat it out was my Note 2, but it would be close.
Let me say that if having a bigger screen is not that important to you, the ip5s is definitely a better phone, and iOS is better for business IMO than Android, which is still not ready for prime time. I've been sorely tempted to return to my iphone, but that screen is just so small. I'm going to give the Nexus 5 a shot, but if it is wonky like the G2 then I'm going back to Apple, small screen or not.
So far my negatives:
Proximity sensor goes crazy sometimes
touch screen stops working, this is kind of rare
Speaker volume is LOWWWWW, it's pretty terrible
knock on sensor doesn't work half the time
some minor but annoying lag
rear buttons are annoying
rest of complaints are with Android, so not really LG's fault.