not the same thing. usually data and voice/text are carried over separate networks and are treated separately. your plan includes so many minutes, so many texts and then so much data all independent of the other.
and i can't say i've seen any plan that was not unlimited call/texts in a long time other than the tracphone cheap plans that are not unlimited.
what company are you looking at that you are confused with what the plan offers? we can help decipher it for you if you can link to the plan in question