A route where there are other people is more important than well lit. Eg a busy shopping street vs a well-lit back street.
Crowds are a decent security by obscurity mechanism, but only if you blend in. If you code as an outsider (e.g. a Japanese tourist in West Philly), then bustle might be a bug not a feature. More potential predators' attention to catch.
More likely a jumpy or purse clutching individual who is oblivious to their surroundings will stand out to perps.