Hello, can someone tell me if they had experience with AWU and Garmin Epix Pro, how accurate is one over the other?

Features-wise, I can go with both. Although I have iPhone, I am not going to be using the watch for smartwatch features. My main goal is using it as a fitness and sleep tracking. I don’t care about the extra fitness metrics that Garmin offers. All I care about is the accuracy of the data like steps, calories, HR, sleep stages etc. I do like to have the option of seeing my readiness score and stuff like that.

Please suggest.