Although these companies differ more than most investors might assume, the two stocks seem to mirror each other in many respects.Although earnings season has barely started, both PepsiCo (PEP -0.70%) and its archrival, Coca-Cola (KO 0.11%), have already reported earnings for the second quarter of 2025. The waning popularity of soda beverages and, in PepsiCo's case, the falling demand for snack foods, have translated into anemic growth for both companies.One thing to remember about both stocks is that they h ...