I can't offer a comparison, I've not driven another Jazz models.
If you're not slamming your foot down, the MK3 1.3L CVT is a comfortable motorway drive.
I'm surprised at how often people say CVT transmissions are loud or bad in this car. Yes, you will get high revs, late shifts, faster acceleration, and worse MPG if you put your foot down, but if you're calm with the accelerator, CVT smoothly and quietly flips through the gears with good to great MPG. The acceleration characteristics aren't astounding, but that is probably to be expected on an economical and inexpensive car.
I haven't looked at the revs on the highway when cruise control is set to 75mph, but I don't notice much engine noise over the radio, so I'd say the other commenter saying 2.5K RPM seems reasonable. I haven't tried it in (S)hift mode, but I'm curious if manual gear changes help.