VLCPortable vs OFFICIAL VLC portable - functionaly different ?

I downloaded VLCPortable 2.1.2 from https://portableapps.com/apps/music_video/vlc_portable

I also downloaded VLC 2.1.2 32 bits and 64 bits (7zip no installer version) from http://www.videolan.org/vlc/download-windows.html

If I compare the versions from either portableapps to vlc ones, I have these information:
VLCPortable: 651 files, 250 folders; 72.3 Mb
VLC2.1.2-win64: 663 files, 242 folders, 97.9 Mb
VLC2.1.2-win32: 708 files, 245 folders, 98.7 Mb

So the portable version of VLC are about 30Mb fatter,
1/ how comes?
2/ Are they functionaly different?

Additionaly, If I md5 compare VLCPortable to either VLC 2.1.2 32 bits or 64 bits, I notice that VLCPortable from portableapps has more common files with the 64bits version from VLC than with the 32bits.

Hypothese:
VLCPortable is build from the 64bits version, I do not see this information on the portableapps page.