Sure, if your sample looks like this

they are just a little different but yea if I played it on both consoles I would think it would be the same
https://www.youtube.com/watch?v=8XqWRACk2zY

His analogy is pointless.
People switched from CD's to MP3s for convenience like playback on their phones, or because mp3 players are smaller than CD players.
Anyone who upgraded their old TV to a HD one (even if it was 720p) did because the image is clearer.

Sure, there is no difference :)

http://images.eurogamer.net/2013/articles//a/1/6/6/4/5/0/5/XO_057.bmp.jpg/EG11/quality/90/format/jpg

http://images.eurogamer.net/2013/articles//a/1/6/6/4/5/0/5/PS4_057.bmp.jpg/EG11/quality/90/format/jpg

And he bases his thesis on: "probably".

For resolution there's a marginal difference most won't notice unless they're looking at pictures side by side. Others won't notice even when they have comparison photos and videos.

Framerate is more noticeable. It's easy to notnice the difference between 60fps to 30fps visually. The people who try to make a big deal out of the button lag from 30fps though, most are bsing. It's a 16ms difference. That's 16 thousands of a second, 16/1000, which 99.9% of people won't notice. Even though visually 60fps is noticeable, running at a solid 30fps is good imo.

I think that instead of 1080p resolution. This gen should be 720p@60fps for all games instead. The visual difference that high resolution gives is marginal, but noticeable framerate drops and screen tearing are massive annoyances.

This.  My girlfriend never plays any games and is terrible at discerning resolution differences.  But even she can see how crazy better 1080p looks over 720p.

Excuses.

99% of the people also dont get to play the same game on two different consoles to even notice a difference

if people know they are different, they will claim they can see the difference even if they can't. That's Psychology for you.