Are invasive procedures and pills better than no treatment? How much?

Massive study shows bypass surgery, stents no more effective than drugs for stable heart disease –...

A major study shows that some invasive heart procedures are no better than drugs at preventing heart attacks and death in patients with stable

The conspiracy theorist in me wants to know the details. Most of me just thinks your time is your time. What is the cost benefit? Are the drugs cheaper than surgery? Is it all about giving up red meat and cheese? Loose the damn weight. How much heart disease is actually kidney disease?