What is the Internationalization Views module for?
Looking at the module code it seems to do the following:


Adds a Translate operation to the ctools export UI (see the i18nviews_ctools_plugin_post_alter() function in the module file).
Supports translation for views strings: title, header, footer (this is in the i18nviews_help() function).


The comment at the top of the module file is:


  This module translates some views strings on the fly using i18n string system


So I would guess the module is just providing internationalisation for some elements of the Views module that don't have it built in yet.