AussieGecko said:

couldnt that and the uncharted bridge both be set sequences, I want to know if you shoot it in the propelor if it falls another way

What I menat was Uncharted 2 regularly takes all player control away when big stuff happens. The zip line. The bridge collapsing. Etc etc. Uncharted 2 is full of moments where player has no control sometimes for only 4 secs. But enough to stop any running issues or physics issues cropping up.

It's called prerendered help. It seems seemless, but is far less taxing on a system and therefore not nearly as technically impressive.