As a keen cyclist who almost got a motorbike license, one massive difference is that a bike weight 10kg (ebike lets say 20) whereas a motorbike upwards of 100, or thereabouts.
I think in traffic you are fairly vulnerable to both, but on a bike, at least if you fall, you don’t have the insult of your own vehicle crushing you as well as whatever obstacle / other vehicle you hit.
I think in traffic you are fairly vulnerable to both, but on a bike, at least if you fall, you don’t have the insult of your own vehicle crushing you as well as whatever obstacle / other vehicle you hit.