Motz, I reckon you've nailed it with your answer, as many of you know I own a 120 and teach in Tecnam's. So it's easy to forget if you're either Arthur or Martha- and I'm neither!
The Jab likes lot's of airflow, but too much at the wrong time and it's very slippery. Just ask anyone who's tried to get a 230 to land from 70 kts!
The Teccie couldn't really care if it's 40 or 100kts, the linearity in it's behavior is fantastic. For those of you who have flown Sierra's you'll know that the Lam wing sacrifices some of these niceties for performance and that's also the decision Jab has had to make- it's all a compromise.
The all flying tail on the tecnam gives great authority at low airspeeds, propwash alone gives enough to raise the nose. But compare the control surface sizes on any of the jabs- much smaller ergo more speed required to be more effective.
On the flip side you can buy 2 J160's for the price of a new echo, or close to it so is it any wonder there are so many Jab's - theyre really are great bang for buck.
They're both very good airplanes, but nothings perfect, so realise the differences, fly them accordingly, and be a better pilot for mastering them both!