Why is the Program so small in size 104kb...?

I’m not complaining but I’m floored on how such a small program could do so much compression. I mean Nero is about 4Mb and IfoEdit is almost 1000kb. I’m just courious of how a program so small, can be so powerful. I love DVD2One. I’ve been making back-up with DVDXCopy and it’s O.K. if you don’t mind (2) two discs, and some set-top DVD player issues. But I have not use it since I purchased DVD2One. Even thouh they plan to release a version to do the same as DVD2One. Also DVDXCopy is approx. 4Mb.