AAPL has a P/E of 50 by the way. I think you're confused about what sales/market cap means.
P/E is price per share divided by earnings per share. Multiply the numerator and denominator by the o/s and you'd get market cap divided by earnings. Since earnings are likely about 30% of sales, so your number is way off.
And who uses sales/market cap anyway? The smaller that number is, the more people value the company, so your analysis is even more flawed. I'm guessing you meant to say market cap over earnings, but it's still wrong by a long shot.