What is the likelihood of seeing another macbook with no stickers compared to the one with the exact same stickers as yours arranged in the exact same way? I think that should address the issue with your argument.
I usually put my carry on (a rolling bag) and personal item (backpack) on the bookends of other bins/belongings on the belt, s.t. all the bins are between two large, distinctly-mine items. It also makes pointing out the items which are mine to a TSA agent significantly easier.