Here is the difference. CC and other sites do basic aggregation. We create a standard that is similar to college catalog so you know which courses are roughly equivalent. Look at all the courses under Computer Science 101
http://coursebuffet.com/cb/computer-science/101
These are the courses we have examined at and determined they are all beginning computer science courses even though the names of the courses are not the same. For example one is entitled Fundamentals to Computer Science another Introduction to Computer Science, etc. Now you don't have to figure out which specific courses are comparable in an "apples to apples" way. It is done for you. If you go on other sites and enter computer science all the computer science courses are listed with only basic grouping leaving it up to you to take your time and figure out which ones you should be comparing.
This also gives you a basic idea in what order you might want to take the course. We have figure that out for you and made it easier to mix and match from different providers.
I am getting significantly more accurate results on www.coursebuffet.com than on www.class-central.com. The latter doesn't seem to have as good keyword search and it often seems to miss even when the word is in the title of the course.
I grant an upvote for doing it better than it has already been done.
