all rubicons up to 2011 have 4.10 gears. for 2012, all manual transmission wranglers have 4.10 gears, automatic transmissions are standard with 3.73 gears with 4.10 as an option. they did this because of the new transmission. with the additional gear in the automatic and the way it is geared, the new 5 spd with 3.73 gears is almost exactly the same rotation wise as the old 4 spd was with 4.10, so in effect, the new 5 spd auto is geared even lower than the old 4 spd.
THat is really strange, because the new engine is a higher rpm power band and they are lowering the gears.
It's not for road racing, it's for rock crawling. I have a '13 Rubi and an '83 CJ-7. The Rubi has 4.10s in the axles, and a 4:1 4L in the transfer case. My CJ-7 has 3.31 gears in the axles, and a 2.62 4L. Running the same trails I've already run in the JK with the CJ feels like a race car, in that I just can't get a low enough gear; I'm in 1st or 2nd, while the JK in 4L, I float around between 1st and 6th all day long, but mostly cruise along in 3rd.
I just realized how old your post was. So uh, yeah...remember that thing you said 2 years ago?