I have to disagree, brownie.
IMHO, there are a number of artists who were at their creative peak while at CTI. Freddie Hubbard was one of them. While I don't think any of Hubbard's Blue Note material (with the exception of maybe "Ready for Freddie") can be really deemed as classic, his CTI work ranks amongst the best jazz had to offer from about 1967 to the present. One need only listen to "Red Clay" or "Straight Life" to understand what I'm talking about. Turrentine also put out a numer of classic albums during this period. "Sugar," for example, was soul jazz at its purest.
And let's not forget George Benson. Everyone only remembers him for his pop material of the mid to late seventies. Before that, however, he was putting out burners on CTI. Refer to "Body Talk" and "Shape of Things to Come."
Though I agree with in some respects (in that there were some bad acts on CTI, i.e. Seawind), the label's contribution should not go unnoticed for it filled in the gap when other great labels such as Blue Note and Impulse/ABC were starting to falter.