This isn't a very useful comparison. For one, according to their FCC application SpaceX is planning on launching satellites with a mass of less than 400kg. For

This isn't a very useful comparison. For one, according to their FCC application SpaceX is planning on launching satellites with a mass of less than 400kg. For comparison, SES-10, a communications satellite SpaceX launched recently, had a mass of around 5300kg. Secondly, they're planning on deploying them to an altitude of 1000km. Again, for comparison, SES-10 went to geostationary orbit, which is a reasonably common communications satellite orbit, at 36000km altitude, though the Falcon 9 only had to push it into GTO, which still takes quite a lot of energy. Finally, the plan is obviously contingent on bringing launch costs further down and realising economies of scale in the satellite manufacture. I'm not sure if they can do it, but being able to launch at least 10, and maybe even as many as 20 at once makes a large difference.