WOND @ 1400am fills the news/talk need of South Jersey very, very well and for 1,000 watts it gets out very well too.
WIBG-AM @ 1020am also does a good amount of news/talk and has an even more powerful signal making it into the Philly 'burbs.
NYC's 770am and Philly's 1210am also pull some listeners at the South Jersey Shore as well.
NJ101.5 for all intents and purposes should be Central Jersey 101.5 - there is only minimal amount of news or talk on the station relevant to anyone south of Toms River. Middlesex/Somerset/Union/Monmouth is their target and they do an excellent job at serving those areas - but what is relevant in Edison or New Brunswick is typically irrelevant to people in Manahawkin, Mays Landing or Vineland (97.3's strongest signal area).
In my own experience 97.3 has tons of listeners here in Ocean County as well as Atlantic County - especially during Phillies & Eagles seasons (likely many more than the simulcast of 101.5 ever had).
Besides, if you really, really want to hear 101.5 on FM - the signal makes it the entire length of the Atlantic City Expressway and is quite strong in the Hammonton and Egg Harbor City areas (both in Atlantic County).