I haven't finished KZ2 campaign yet... but even at higher difficulty level, I managed to kill the boss(s) during our first encouter and unlock the trophies that goes with it... 
I don't think the game are easier... just that we are better at playing them...
I remember the end of the Genesis era... it was only games with an infinity of "continues".
Now I directly play games at the higher level of difficulty.
Evan Wells (Uncharted 2): I think the differences that you see between any two games has much more to do with the developer than whether it’s on the Xbox or PS3.







