This isn't really a meaningful comparison. People don't buy phones just based on battery life. It has to be weighed in with screen size, screen resolution, processor cores, processor speed, and weight of the phone.
For screen size and resolution, and for processor cores and speed, more is better. But for the battery, more capacity also means more wight. And for weight, less is better. This causes battery life to be a trade off between capacity and weight.
Phones with similar screen and processor specs are going to have similar battery drain (all else being equal.)
Balancing battery capacity and battery weight is the same problem for all manufacturer's offering those specs.
To fairly compare phones with different specs, all these specs have to be scored and weighed and a composite score calculated. Otherwise, low performing phone specs have an unfair advantage over high performing phones.