Especially since there is no penalty for not meeting your bid. So while it technically works with two, I would really only recommend you try Rage if you're able to get at least three to play.
In the edition I have, there is a -5 point penalty for not meeting your bid (and a +10 bonus for meeting your bid). That said, I agree with your point that it is hard to catch up in a 2 player game. The game plays much better with 3 or more.