I would wait until they're both out and there's more info on them like gameplay videos and reviews before deciding something like that, but that's just me.
Still that said chances are Far Cry 3 will be more original and fun than another CoD, provided it doesn't end up like Far Cry 2 which I like to pretend doesn't exist.
fc2 is a sedan stealing - african safari without proper animals ...

(could atleast add some more wildlife in the darker more foresty areas with no people)
Wait for both to come out and decide after watching reviews and gameplay vids on YT. Im doing the same with DayZ now cause i have to buy arma2 first for it... And borderlands 2 , so tempting but but but anyway..... My friend who played gw1 and all its expansions 24/7 got gw2 and now he is already bored of it....
Thing with devs these days are they dont create nice games to play and only abuse the games title Ie : AC 2 was cool, AC3 is going to be so weird to play ... i just dont see it working , running out of ideas ubi ??
crysis 1 and wars was WAY PAST EPIC , crysis 2 a slap in the face ...
look at diablo 3 ... another cash cow that could have been awesome and will most probably still be after expansion and patches, and all the other cods after cod4 .
take your time, the games not gonna run away its just gonna get cheaper
