You cannot compare files while filtering with MP3Tag. The only way to compare files is with creating an export-list of your files. How to do this look in the export-section of the Mp3Tag-Help.
Years ago I started a similar thread in the german section of the forum. If you don't know german you maybe can get help with google translate.
/t/9623/1
I think the easiest and fastest way (if you have a folder for every album) is to use external help from software like Treesize.
http://www.jam-software.com/treesize_free/?language=EN