You have absolutley no clue what you are talking about. It is not that the PS3 is "not powerful enough". It is because the data is divided up more and the game takes more time to sort stuff out (from what I know and think, at least I have an idea of what Im talking about). The programmers/developers of this game are the ones at fault, it is their fault that the game does not retrieve data (the textures, in this case) properly. The PS3 has enough "power" to play this game, the game just doesnt have the "power" to play on the PS3.
The people playing the game and complaining about the texture pop-in are usualy that have no idea what they're talking about. Sorry .. but it's not perfect on PC either ... takes some time till it knows that it should all stay in memory.
https://twitter.com/#!/ID_AA_Carmack/status/124652351918313472
https://twitter.com/#!/ID_AA_Carmack/status/104546820918755328
https://twitter.com/#!/ID_AA_Carmack/status/124917372040642560
https://twitter.com/#!/ID_AA_Carmack/status/104585927296421889
https://twitter.com/#!/ID_AA_Carmack/status/123616754747453440
http://www.youtube.com/watch?v=4zgYG-_ha28