Death By Competitive Analysis
steveblank.com
steveblank.com
What customers say they need or want != What customers need or want.
At least not necessarily. For instance, they might say they want "something like X already offers but better" when they'd prefer something that's quite unlike X (and much more better).
However, in this instance re:competitive analysis, I agree with Steve. If competitive analysis is focusing on a feature for feature comparison, I can understand why that doesn't jive.
It is the entrepreneurs job to interpret hearing what the customers want into something that they didn't know they want, but must have.