Ripping to HD - smaller file than original?

I am using DVDFab HD Decrypter to rip a movie to the harddrive. After ripping the movie in DVD9 mode (100%) I open that folder in DVDShrink and it is about 60mb smaller than when I open the original in DVDshrink.

How is this? Shouldnt it be exactly the same as the original when ripping DVD9? Or is it smaller due to the copyrights being removed?

Any answers would be great. Thank You.

One thread is enough. I’ll close this thread but leave this one open.