For binary code subtypes the compare option is disabled. I find this protection not needed and in some cases it limits functionality.
Our compare tool is capable of comparing images, word documents , ... but RTB prevents us from using it for that.
In order to preserve unix/linux style line-endings I have created our unix shell code subtype as binary . Because of that I can't compare those either.
Not yet on 11.7 maybe it's changed
As far as I know, the compare option is not disabled when a Object flagged as binary is selected.