Have you ever driven a JK with that trans in it? If you have, I'm surprised you're saying anything nice at all about that pile of mechanical poo.
With respect to the ratios? I've driven JK's and JL's but never the 6 speed. Still, even with the auto it was clear how different the torque curve is vs the 4.0 so it wouldn't surprise me that what ratios feel good with the 4.0 might not with the V6s.