The Eidos page for Just Cause 2 now has live stat tracking for 360, PS3 and Steam. A live top ten list for such things as kilometers driven and tallest base jump can be viewed for each platform as well as milestones that each player has achieved so far. You will have to register in order to be added to the pool, but it's free and easy.
Yes it's achievements but I don't care, I want my name on those top ten lists!