There are hypotheses that Neanderthals were actually smarter than our other ancestors, and that they were wiped out for various reasons unrelated to intelligence. They may have been less violent than homo sapiens or seriously weakened by pathogens that didn't affect homo sapiens.
There are hypotheses that Neanderthals were actually smarter than our other ancestors, and that they were wiped out for various reasons unrelated to intelligence. They may have been less violent than homo sapiens or seriously weakened by pathogens that didn't affect homo sapiens.