[Stratuscaster]

KA/Nitro is slightly longer and has the optional 4.0L V6.
KK/Liberty has arguably a better off-road drivetrain, but only comes with the 3.7L V6.

I would want to drive each one over that route and see which one felt better.

 

[Stratuscaster]

What hurt Nitro, IMHO, was the fact that even up-level trims ended up with black un-painted bumper fascias. Made the whole vehicle look cheap.

The fact that Nitro was a bit longer helped it's overall look, too.