It's simple, when Jackson was thrust into the CB2 role he wasn't that much worse than Levi was. So we keep Jackson at a lower cap number to stay at CB2 and allow us to use the cap we were to spend on someone else like DT Jones. We then draft a guy that will be our CB3 and hopefully develop into a starter. Rinse and repeat. It's why our previous regimes sucked as we never developed anyone or got benefits of good draft picks after round 1.