The 'top of the line' means the most options that isn't available on any other model. You just made my point. (bigger axle and lower gears wouldn't classify as top of the line). The rubicon is however the best offroad vehicle for sure! Just not top of the Wrangler line.I think it absolutely disputable. The only things that a Sahara offers that the rubicon doesn't is the leather lined dash panel, chrome grille and bumper accents and 4H auto transfer case with cv joints on the front axle.