Not to be snarky but it's also unfair to pick just last year since it's Apple's largest ever and relatively average for WM.
We can compare trends if you'd like. You basically pointed out the issue with your own statement. Apple has been skyrocketing while Wal-Mart's profit growth is much flatter.
There are a number of other firms that regularly outperform Wal-Mart. Not counting banks & investment firms there are a few oil companies, at least one pharmaceutical, Toyota & some other tech companies.