The reason you have a hard time getting a good answer to this question is that it is highly variable depending on the structure you are looking at and the pathology you are searching for. For example, MRI is the preferred modality for evaluating some bone pathology (osteomyelitis) but is never preferred to CT for evaluating fractures.
The technological advances in CT scanning (and the newer techniques of CT angiography and arthrography) are further blurring the lines, and the literature is still exploring the relative value of each modality with reference to specific diagnostic problems. See some of the recent papers on the use of MRI for appendicitis; intuitively this would seem superior to CT scanning, but research suggests just the opposite.
I would suggest getting a handle on the CT/MRI issue with reference to specific clinical problems, rather than seeking a generalized answer.