The issue seems to be the height of the P.3000 but hey, if you like the looks it's certainly a nice watch. To me it's a watch that due to its history and the circumstances under which they were delivered – out of respect for the Panerai family – should never have been copied. However, have a look at the profile of the PAM 21. This is how the Radiomirs should look like.

Cheers
Jose