I'm not sure what kind of iPhone users you've been talking to but I'm a very heavy user and often have to charge my iphone 2-3 times a day. I get only slightly better results with the G2. But the thing about iphone 5 is that since the battery is smaller I can charge it to full much more quickly, and hence could use my phone again. So the total amounts that I could use my iphone is actually better compared to the total amount that I could use on my G2 because the latter takes much longer to get to a full charge. Another point is that the G2's battery is only a bit better (emphasize a bit) because it's almost double the size of the battery in the iphone. Get it?
Here are many users complaining about the 5s battery life:
https://forums.macrumors.com/threads/1644553/
https://forums.macrumors.com/threads/1665107/
I googled for specs on charging times, but I didn't find anything so I don't know if there is an official spec for charging times for either phone. I've never noticed my G2 taking longer to charge in particular over any other phone I've owned, but I've never timed it versus a 5s. It's never an issue though because you need to charge your iphone during the day, 2-3 times a day according to you, in contrast I can do almost anything on mine and NOT have to charge it at all, not 2-3 times, not even once. So the time your 5s spends on the charger is time that I'm actually using mine, which means I get MUCH more time on my G2.
I still think the size of the battery is a silly argument. Yes you are right from the technical specifications, but who cares? Your phone still lasts x hours, my phone still lasts x hours. You talk on your phone for 10 hours, then have to fully charge it again, then talk another 10 hours, then fully charge it again, then 3.5 hours, then almost half charge it. I talk on my phone 23.5 hours without charging it until the end.
EDIT: Just found charging time for the G2 is 2.6 hours:
http://www.anandtech.com/show/7251/lg-g2-and-msm8974-snapdragon-800-a-quick-look/3
Does anyone have a link to ip5s charging times?
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Coming from an iPhone where I constantly needed to be plugged in, this kind of battery life from the G2 is insane. I can unplug at 7am and not have to plug in until 2am and still have 20-30% left. That's nuts because with my iPhone I'd be dead by 2-3pm.
I think this is a pretty typical scenario for iphone users, it was EXACTLY my scenario when I used to use an iphone 5 as well.
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Never heard that before, can you back it up at all?
Really? Lol....