You know, Uncharted 1 said it pushed the PS3 to its max as well...
Its like having a glass an having it FULL of rocks
If I asked you, is the glass full? You would say yes
Then I could pour in a bunch of smaller rocks to fill in between the bigger rocks, and ask you is it full? and you would say yes..
Then I could take some sand and pour it into the glass filling the spaces between the big and small rocks, I would ask you is it full, and you would say yes...
Then I would fill the class with water, along with the sand, small rocks and big rocks... and you would say it is full..
Always makes me mad when people say a system has been PUSHED TO ITS MAX
As it has not, you just need to optimize your code better...
I cold make a game that would utilize all the SPU's of a PS3 and make it look like pong, sure
I am using 100% of the system, but could it do better? Of course it could
If you want a recent example look at Windows ME vs Windows XP or Windows Vista Vs Windows 7 :)
Unicorns ARE real - They are just fat, grey and called Rhinos
