Doubt that. I lived in Astoria Queens and East Harlem. I worked as a realtor so I took the trains to every part of the city almost every single day. Not only were fights more common on New York trains but incidents where mentally ill people randomly attacked others is more common there. I knew coworkers who were attacked (one was stabbed trying to intervene when a mentally ill man attacked a pregnant woman), my cousin was beat over the head with a pipe on a train in queens, I’ve gotten into a fight myself there as well among many other examples I could give personally and what’s been on the news. It’s just not true that the trains are more dangerous in Philly.