BALIX,
American pilots are ingrained to key on their aircraft type and the tail number. So, when a C310 pilot hears, Twin Cessna Zero Alpha Bravo, his ears should perk up at the sound of twin cessna.
As for pilots not listening, trust me it isn't unique to American Pilots, I can't count how many times that I'd love to have a button that I can push that would ZAP the pilot so he would listen.
Mike
NATCA FWA