It was a general statement. If the OP wants more specifics, then he/she can take the 5 seconds to google search a schools website.
edit: i couldnt find anywhere on NYCOMs website or in the CIB that says they have a favor for NY residents. What does "quite biased" in terms percent OOS and IS? Is it like some of the UCs where greater than 95% of peoplel come from CA? There could be just be a difference in that a majority of their applicants come from NY and not so much that they have a bias for them eg that you are at a disadvantage if you are from another state.