Well, changing to 29 was my idea and shared my finding with them on DM.Yes. I meant that they should have linked/credited these findings. Tools are already mentioned in the video.
I guess they knew how Crysis works, but realizing that 30 is actually 31 and 29 would fit better is not something that everyone would notice. I havent seen any video from them modding the PS3 and 360 version, and, at least in 360, config files are plain text, you can tweak the framerate and many other things.