I'd say that Far Cry 3 definitely has more 'entertainment value' - depending on what you're looking for of course. It seems like Far Cry 3 has much more 'diversity' and 'freedom' regarding things you can do in the game. (Not to say TR is bad in its own respect. - it's just not comparable to FC3 IMO...)
I bought it on PC and love it. The gameplay is exactly what I was expecting/looking for, so I am very pleased. I have been telling everyone to give it a shot. I feel like I am playing a next-gen Uncharted.