Fairmount Park is like California (oops bad choice) would be to Rhode Island. in size. It is also a much nice park. When you come to Philly I will give you a tour.
To be honest I am not sure because I have never been to NY's Central Park
But Fairmount Park is pretty huge and very beautiful .. you should also see it after a nice snow fall .. it is so pretty and peacefull ..
Were I grew up, part of the park was right across the street and even though we weren't allowed in the woods .. we would play there anyhow ..
Someday I'll have to tell ya some of those stories .. LOL