User blog comment:Deyvid Petteys/Play Dawnguard on PC Today/@comment-1145658-20120803200706

In case anyone is wondering, the reason the PS3's version is buggier in so many games is because of the Console itself. Though it is powerful in some aspects, the PS3 has been designed very awkwardly both in terms of hardware and software (especially with how it manages memory) and runs games in a far different weirder way than the 360 or PC (which are similar to eachother and very "dev friendly" anyway). This means that unless you specifically make the game first on the PS3 (which very few companies do), you're gonna have some trouble, especially if you're dealing with something like a new game engine. I'm willing to bet that Skyrim's problems on the PS3 are due to this (I'm NOT saying it's excusable, but there is a reason).

A few years ago when devs first began complaining about this, Sony even released a hilarious response of why their console's architecture is so weird:

http://news.cnet.com/sony-ps3-is-hard-to-develop-for-on-purpose/