Is this true? See this post: http://answers.ea.com/t5/Crysis-Games/Patching-Crysis-1-to-latest-update-through-Origin/m-p/1629303#M12648
"The patch version and file versions are mismatched.
Patch 1.1 = 1.1.1.5767
Patch 1.2 = 1.1.1.6115
Patch 1.21 = 1.1.1.6159"