If Dice can get 64 players on the PS4/Xbone versions of BF4 and the previous version had 32 players for killzone, why the decrease on a more powerfull console.
Destruction is a great tool for a fps but it has to be balanced for gameplay and performance.
BF3 looked bad on PS3 and 360, Dice should have dropped the old generation and focused on the new generation alongside the PC lead platform.
So you are using a beta version of the worst platform to judge the games graphics, until its released on PC-Xbone/PS4 you cannot judge the graphics.
As for patches all fps have a day 0 patch and more will follow to improve performance and balance the game.
Orange BB 5856/448