My understanding is that Cuisinart Rice Cooker/Steamer is a very attractive version of the cheaper boil and steam croc type rice cookers with the ability to hold once cooked. Page 6 of the instructions:

As I understand it it combines a steamer section so that you can steam other things on top of your rice - so this can be combined with cooking rice. I believe therefore it replicates and cooks rice in much the same way you'd cook it in a saucepan manualy except you have less control ie you can't turn down the gas! So for example you could fry onions in a sauce pan, add some rice and water and then put a steamer on top - and my understanding is that this is what the Cuisinart Rice Cooker/Steamer basically allows you to do.

The more expensive fuzzy logic versions that only cook rice ie they are not multi talented - combine pre-soaking, boiling and steaming and when the fuzzylogic chip detects the temperature rising above 212f (the maximum temperature water reaches) it presumes when this temperature has been reached that all the water has now been used and goes into keep warm mode. It also allows you to select different rice types and desired different hardness of finished cooked rice. With your unit, you may take the lid on and off the unit whilst cooking in order to add stuff to steam - and this will compromise the accuracy of cooking perfect rice - with the fuzzy logic versions you have to leave it without disturbing it until you're told by beep that it's ready. Basically they just cook rice.

I'll be corrected if this is wrong - but I hope it helps explains the difference.