And it took them 7 years to do that; you are somehow expecting that level of optimization to come out from day one of games.
If you are referring to me then you are wrong, because
I am expecting just the contrary.
In the PC world, developers do not spend many time on optimization because hardware is continuously evolving. PC game developers obtain more frames, more graphic effects, more phys, more all by targeting a more powerful PC. This is a brute-force approach.
This is evidently impossible on a console where the hardware is fixed. Console developers obtain more frames,... more all via optimization for that hardware. This is an use-all-the-metal approach.
Almost all early games for the PS4 will be direct ports from PC or games developed for console without any optimization and then ported to PC. The gaming PC that Epic and other developers are targeting for the first demos of PS4 is an i7 + 16 GB + GTX-680 (2 GB).
In future, developers will be optimizing games for the PS4 to match future gaming PCs, until a point where the PC hardware will be so powerful that a new gen of consoles will appear.
If you ask me, hardware is evolving so fast those days that I doubt that the new consoles will survive for 7 years. I think that a 5 years span is more realistic.