To be fair ,i think (IMHO) Laa-Yosh not only underestimate realtime possibilities to fake or approximate things,and use tricks.But he also did some disturbing or over stretched assertions.
For example , the motorstorm trailer.
First ,there is probably only one light source +ambiant in that trailer.
second , there is not need for complex fluid dynamics nor 3d volumetric particle to achieve anything in that trailer.
Third ,the helicopter shadow appear only for 2-3 frames ,and a closer look reveals what looks very much like a simplified geometry projected.
then ,i don't see what's the trouble with the vegetation,since it's mostly a desert
.
In fact ,the most impressive feature in motorstorm trailer is probably some kind of displacement mapping for the wheels that dig in the tracks.
As for killzone ,i know for a fact ,that they outsourced most of the graphical data for killzone 1 and won't change that for KZ2 nor KZ3,and also that they have been working for 15-17 months on nextgen ps3 technology ,built partially upon KZ1.
That said ,i don't care if both trailer are RT or not ,or even partially .