User blog comment:Volknur/The Problem with PvP in Dark Souls/@comment-11388043-20130711205752/@comment-4511886-20130712083438

Also note that I'm talking with my knowledge of the PC's system. I think the consoles also has a peer-to-peer system, but I'm not sure if it's as bad as the PC.

I read that they didn't want to take the chance with dedicated servers on DaS. I don't know why but I have a feeling that it's because they didn't know how the consumers would react to it. The PC port had peer-to-peer because of time constraints.

Sources: Random DaS news on Steam. :p