Time is essential here. PS3 has the same symptom compare with previous model, PS2. Give it 1 or 2 years to shine, to show true color of PS3. Game makers most probably in "try & error" situation at the moment, but once they can configure out how to push the PS3 to max the outcame will be different.

Now, few titles already can be label as “AAA” grade, not far from now PS3 will slowly climb its peak. By that time it will worth every penny when purchase the PS3 game.