@ NJ5
I understand your point, but the excuse is addional development time and effort involved ($$$). The Oblivion developers did a relative good job compared to most others though.
If they started developing this game specifically for the PS3 this may only have been released somewhere in 2008 as mature PS3 devkits weren't available until a few months before the PS3's release and considering the enviroments and the depth of the game being impressive. IMO the benefit for this less than optimal port is that you can experience such a deep game right now when there's a relative lack of truly impressive games versus having to wait many additional months, and by the time the game would have been completed there would be so many other great games available.
I think this is a transition period within which the current Oblivion game fits very well. The current PS3 userbase doesn't yet justify releasing a PS3 exclusive like this for 3rd party developers, unless Sony would dig deep into their pockets to make it worth their while.
