radio text fonction, why doesn't it work compare to other device ?

Hi to all...

i don't know in the usa, but in france as the following video on a basic factory radio unit from citroen car company, i have more info in it than the big screen appradio...

so why is appradio less reactiv with radio text animation as other ones do ?

in appradio when i go to the "text" radio fonction there's nothing, just one info every 5 minutes...

in the following basic unit, it react all time , why ?

http://www.youtube.com/watch?v=41qS5XjyDF0

look the "TXT" fonction activated upper screen and down scrolling the icon text "leaf" with advertisement text info "happy hit radio..." while upper is displayed the other info about the singer...