I look at gsmarenas battery test to compare.
It might last a day now, but with battery deterioration won't in a couple of years.
I tend to travel quite a lot so really need something that will comfortably last a full day without charge, with continuous use including GPS.
Granted most occasions I'll have access to charge, plus I carry a spare battery with me just in case, but I don't think it's unreasonable to have a phone with 2 day's of battery life of normal use.
My Xperia 5ii did that when new, although now just lasts a day of normal use.