I actually consider Far Cry 2 as being ported to consoles from PC, not vice versa.
That may have been true early on, but I'm pretty sure consoles became the lead SKUs after they announced the game was going to be multiplatform. Firstly, ever since the announcement, all footage, previews, demonstrations, etc, have been of the console versions. Secondly, the console versions have to be submitted for certification at least a month before the desired release date. This means they inevitably receive the most attention.
As for C&C, yeah, it is a PC series so I'd have no issue with paying full price. That is, if it's good and if it doesn't come with retarded DRM.