How Effective is Sales-to-Price Investing Strategy?

One of the strategies I have investigated is at times recommended by financial observers; it has to do with sales/price ratios, rather than the usual earnings/price ratios.

You can find many instances where companies which excel in the sales category do better than most. But when you look at the pros and cons, in too many instances, the inability to convert sales into earnings is an overwhelming problem, not an asset to be sought when investing.
 
Of all the strategies I have studied. price/earnings are the least favorable despite their wide use; they cannot be disciplined, as I have often explained in detail. ( (See the Earl J. Weinreb NewsHole® comments and @BusinesNewshole at Twitter.)