Why can we choose BHP Group and Rio Tinto

Both are projected to provide double-digit returns in the long-term under their current conditions. BHP $BHP Group Ltd (BHP.AU)$ is projected to return about 12% annual return (“ROI”) and RIO $Rio Tinto Ltd (RIO.AU)$ even higher at about 15%, while the overall market is only about 6%.
The fundamental reason is both BHP and RIO have superior ROCE (return on capital employed). Their ROCEs are both in the range of about 30%, higher than the overall market by 10% (or ~50% in relative) terms. Such higher ROCE gives them the ability to grow faster and return more cash to shareholders, leading to far superior total returns.