Interesting rivalries, but they are not unique to NY. *KC has similar competitiveness between the two halves of its metro. *The wealthy side (Kansas) has "leeched" jobs and business from the poorer side (Missouri) for decades which irritates some on the MO. side, (prosperity envy) while The MO. side has more national notoriety, which irritates some on the KS. side. Also, they have been trying to pass a bi-state tax for a few years now to upgrade the stadiums, (which are on the MO. side), and the Kansas half always votes it down. *The most oft given reason for voting no is that they don't want to pay taxes for Missouri property.
Sounds like squabbling children, dosen't it?