Okay, so the skill-set required to play them may be the same but there is a HUGE difference between a traditional accordion and a midi accordion.  For the record, I prefer the midi accordion.  Several observations (based soley on my personal opinion):
1.  The guy is a good, competent, 'lounge pro'.
2.  Although normally not a big fan of Ketron, I have to admit that it provides some of the best accompaniment among arranger keyboards.
3.  I liked that jazz waltz (around 2:05) although there wasn't much 'accordionish' about it.
4.  The guy is better looking than Uncle Dave 

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chas