Those wanting to up their body’s muscle building capability will more likely go for BCAAs while those who wish to improve their body’s energy production and efficiency will go to creatine.
BCAA and Creatine: What You Need To Know

Those wanting to up their body’s muscle building capability will more likely go for BCAAs while those who wish to improve their body’s energy production and efficiency will go to creatine.
Made of valine, isoleucine and leucine, branched-chain amino acid or BCAA is the preferred choice of fitness enthusiasts, personal trainers, runners, crossfitters and bodybuilders to achieve healthier, fitter and leaner bodies.