Labeling this ECG tool "superhuman" is hyperbole that exaggerates what this technology can actually do. Strong performance in a large U.S. trial is encouraging, but AI-ECG performance has been shown to fall in broader, lower-risk populations, where disease is less prevalent, milder and presents differently. In one community study, positive predictive value was just 14%. So the real test is whether these results will hold up in everyday NHS screening.