There's nothing the Edge I used to own could do that my Fenix watch can't. Out of the box there's one missing feature (auto-lap by position, not by distance) but somebody made an app that fixes that.

One thing that's really nice about a watch (vs a bike computer) is that it can vibrate on your wrist when it needs to tell you something, like for example that there's a car behind you (with the radar unit). They can beep like an Edge too, but going fast down a chipseal road, or in traffic, it's easy to not hear that.