Actually, I would draw equivalence and I'm surprised that anyone would try to lessen the seriousness of not concentrating whilst using a road vehicle. Yes, a bicycle is just as lethal to certain other road users as any other mass travelling at a reasonably high velocity. A twelve stone man travelling at 20mph can crush a child's skull, Bicycles are subject to the very real rules and regulations of the road, just like the cars, trucks, buses and taxis that we all love so dearly. It exists on the same hard road that every other road vehicle does.
Riding without due care and attention is equally as dangerous as driving without, both to the rider and to other road users. It presents a danger, not only to the individual but to everyone else who has to accommodate this wilful ignorance. The guy in question was in his own world, oblivious of oncoming motor traffic, other cyclists and pedestrians using the junction, (and presumably a good stretch of pothole infested road until he'd finished his call.) We've seen on here the results of hitting a careless pedestrian. One can only imagine the damage caused by a careless cyclist who hits a child or elderly person crossing the road because they were "out of it" using their smartphone. I've been riding and driving on the UK roads since the 1970's and I've seen some shocking ignorance of the Highway Code by drivers and cyclists alike. Just because we use an unlicensed and essentially untraceable vehicle does not mean that we are absolved of the rules of the road. I've seen cyclists routinely ignore the solid white lines at road junctions, red triangle warning signs, stop signs and speed limits (both zoned and mandatory) as well as the red traffic lights that are the mantra of the "get bikes off the road" movement. I've found myself ashamed to be associated with some cyclists just as I'm ashamed of the behaviour of some car drivers. In conclusion of this rant, yes, I do draw a moral equivalence in both kinds of idiocy. If we expect to be respected as road users, we should be bound by the same set of "morals" as everyone else.
http://road.cc/content/news/31118-teen-cyclist-fined-following-death-manchester-pensioner
Refers to a slightly different situation but underscores the responsibility of cyclists as road users.