User blog comment:G0LD3NF1RE/Dawnguard encounters issues with Playstation/@comment-67.165.61.166-20120901141820

Its not bethesda's fault entirely, the main reason is that there creation engine just does not gel well with the PS3, and since the PC and Xbox are both microsoft based platforms (for the most part on PC), they are obviously gonna make sure the game can absolutely work on those two. PS3 owners have a right to be mad, but also must accept that they chose the odd man out, something that may have seemed like it would not have been a problem early on. This may actually become a regular problem as game egines become more complex, and unless a studio has a very dedicated Playstation Team, the port to the playstation console will continue to be less than what you find on PC and Xbox. (And also, the wii u may encounter this problem as well.)