User blog comment:G0LD3NF1RE/Dawnguard encounters issues with Playstation/@comment-2022867-20120831154301/@comment-82.243.194.53-20120831163505

They had almost the same problems for Fallout 3. And for some odd reason, when they allowed Obsidian to make FNV, well nothing like that. All the bugs were the same on each platforms, they didn't have any trouble porting the DLCs. But yes, it's just a coincidence.