Visa Inc's (NYSE:V) fourth-quarter results have drawn a clear line in the payments sand. JPMorgan analyst Tien-Tsin Huang says the data shows Visa widening its lead. Global travel is rebounding, fueling a surge in high-margin cross-border transactions — a segment Mastercard Inc (NYSE:MA) may struggle to keep pace with. The two networks' three-year, 90% KPI correlation is beginning to break.Track Visa stock here.Visa's Global Volumes Stay HotVisa's fourth quarter print left little doubt about momentum: U.S. ...