AstraZeneca Just Massively One-Upped Pfizer. Here's What It Means for the Stock

Both businesses have road maps for the future, but one is better.As two of the world's largest and most prolific drugmakers, Pfizer (PFE -1.38%) and AstraZeneca (AZN -0.87%) both have grand visions for how to grow even larger over the coming years. And with billions of dollars devoted to research and development, it's almost certain to lead to the discovery of new golden-goose medicines that should enrich shareholders.But for investors, the details about how those billions will be spent, and how those winni ...