Just to confirm, Kevin Foote just mentioned that he used to hear the same thing about Jake while he was lamenting the loss of what he describes as a block out receiver.
That was a common theme around here at one point: player X would leave here and go kill it somewhere else. That falls directly on the shoulders of the coaching staff.
Jake went on to become Carolina's best QB (prior to Cam) because he wasn't a good practice player. The only reason why the Saints wasn't heavily criticized back then was because Brooks wasn't too far off.