I've never owned a motorcycle, but always wanted one, and yeah, I bought the Spyder with all those safety things you mentioned in mind...
..So, keeping all that in mind, I do feel that Spyders are intrinsically safer that two-wheelers - they have a bigger presence on the road, so you have a better chance of people actually seeing you, they won't slide from under you on gravel, sand or wet leaves, eliminating the chance of low-siding, they won't throw you off their backs if you lock up the rear wheel, reducing the chance of high-siding...
...So yeah, I'm enjoying my rydes with the confidence Can-Am built into my three-wheeler, and my kids don't have to visit me in the hospital
...just my two cents.