crysis destructible buildings were all like one story high and basically just made out of 8 large physics objects that was kind of a fake if you ask me ...
and seeing how little of the actual destruction they show in the video (basically just one-upping crysis by having 2 story buildings YAY) i believe their shit is fake too, except with more destructed looking remaining objects.
they are not actually booling / csging the holes into those walls on run time.
bring on the collapsing skyscrapers ! ... where the hell is my akira game ?