As the reviewers below suggested, Argerich is not at her best here, even though Perlman is not quite bad compared to his recent live performances where he tends to be absent minded/too much easy going.
If you would like to hear Argerich at her best in these masterpieces, try the following recordings:
Gidon Kremer(vl.) and Argerich (Beethoven) on DG, James Galway(fl.) and Argerich (Franck) on RCA, Mischa Maisky (Cel.) and Argerich (Franck) on EMI.
In every recording above, she sounds much more inspired and precise.
Argerich also recorded Franck with Ricci (vl.) on a minor label, but this is not recommended as Ricci sounds too brittle and shallow.