That would be a reasonable answer most of the time, but as the topic was sleep tracking I'd disagree. Consensus I've seen seems to be that Apple has better sleep tracking (having used both, I would agree). Even if they don't, one can swap out to use another sleep tracking app. I think you're stuck with what you get out of the box with Garmin. (Though I've not looked at Garmin's app store. Knowing what I do about their SDK, I doubt a 3rd party could write a usable replacement app.)

I find that Apple sleep tracking concentrates on how early you go to sleep and how many times you get up. I haven’t tried anything else, but the Apple thing doesn’t tell me what I don’t already know. Any suggestions for something basic, BPM and simple alarms ant timers? About to ditch my Ultra S3.