Apples and Oranges, just comparing battery life it’s like me saying a Casio is even more far ahead of Garmin, you don’t need to charge it.
AW is a smartwatch and Garmin is a fitness watch, if all I want is to track sleep and exercise, sure a Garmin would do, but Garmin is still lacking when it comes to smartwatch functions.
And judging by the fact that with a newer and smaller SoC, instead of taking the opportunity to keep the same size and add on a bigger battery, Apple opted to slim down the watch instead, this just tells you Apple understands their demographic have different priorities.