Last time I checked (which was 6 months to a year ago), WZXL was still playing stuff like The Eagles, Fleetwood Mac, and Billy Joel while calling themselves a "rock station". Not much about the station has changed on the surface since then. That, combined with the way they pitch their music up like a Top 40 station (I've noticed every Equity station does that, even 96.1 The Touch), probably won't be too appealing to the average displaced 'JSE listener.
The Shark is your reliable, dependable Classic Rock moldy oldies: your place to hear Stairway, Freebird, Sweet Home Alabama, The Who's CSI themes, and all the rest another million or so times if you weren't sick of them by now. 'JSE's ratings might have been weaker, but The Shark is the clear underachiever of the Atlantic cluster with its powerhouse signal and fair-to-middling ratings. One can only wonder what 'JSE could have done on a signal like this. Anyway, highly unlikely that they pick up many former 102.7 fans.
97.3 ESPN Radio will stand to pick up some of the alternative rockers who also happen to be sports fans.
But the vast majority of the audience will not be enthusiastic about any of the options out there. They'll probably do the same thing that most in the Monmouth/Ocean area did when G Rock flipped to Top 40 - move away from FM and go on to satellite, Internet radio, and their portable music devices.
As for myself when I travel South Jersey: I might tune into Wild 102.7 a little out of curiosity, and I actually enjoy the mix on The Touch (esp. the weekends, when they go retro and play a lot of classic hip-hop and new jack swing), but without a doubt I'll have to bring along my MP3 player and car adaptor.