faster only depends on the server automation is easier too because it all comes from one central server. this also means its easier too shut down just look at all the Usenet providers that have been sued and closed down. downloads of torrents go faster the more people use it and download seed also depends on the internet connection of the people in the swarm. if enough people seed a torrent it will always be faster then a central sever that is bottle necked with how many connections it can handle at a time and is very hard to shut down because as long as one person is still seeding you can still download and you could build up the users of the swarm again. with usenet you can shut everything down by taking one server down and your paying money for it to so if this happens you also loose your money and then better hope you did not pay with a credit card because now they have your info too.