MSG end sequence was like a movie extremely long and had a fight sequence in between that. But the game was good, i enjoyed and i still don't think MGS4 is for everyone.
As far as GOWIII goes i doubt there would be alot a cinamtics, unless they intend to pro long the game the previous GOW never had many video sequences cause you running around half the time and the its usualy in-game cinematics which don't interupt game play as they are part of it.

