There's no comparison, and I don't have to watch the video!
The DCS Explorer is a DC output only device and is very limited in it's capability. For one, it has a limit of a single channel with a maximum of 6 amps on the track. It's only suitable for a very small layout. You can't do stuff like reset DCS locomotives, load sound and chain files, run conventional locomotives using the TIU variable channels, etc. I'm sure there are tons of other deficiencies, but that's a start to the list.