There is enough difference in his framing and position relative to his subject (he seems to shoot down with the 50 and eye level with the longer lens) giving it a different perspective that is not related to the differences between the lenses. In some, the subjects are not the same size either.
I get a bit annoyed when someone makes an effort to show a point and doesn't do it right.
Personally I prefer 85, even 135 to 200 for those types of shots but, each to their own.
I find the compressed "look" too clinical and sterile or, rather, more clinical and sterile. I would even use the word, more boring. Then again, I don't like 50mm, either.