I don't know about "better" across all metrics. Just different.

Mounting the scooter is easier, they are cheaper (thus theoretically better suited to this sort of grab one and drop it wherever model), they are lighter (which is maybe more important for scenarios where you own it rather than grab-n-go), they are easier to maneuver at very low speeds, and they don't require that you know how to ride a bike.

E-bikes win on another set of axes: they are more comfortable for longer rides, they are faster, they have greater range, they are more maneuverable at higher speeds.