It's a bit vague, but battery life or, more specifically, battery drain is user dependent. If you find you have a significant battery drain, you first need to assess how or what your device is being used for. For example, a light phone user should be alarmed if they find their phone low on power from a full charge by half a day, but a heavy use gamer shouldn't really draw issue, or someone who heavily uses the camera for significant amounts of time.
Comparing your battery stats can, therefore, lead many users to the wrong conclusions.
