Well that seems to settle it, Dupecheck doesn't catch dupes of videos that are still on the front page. Didn't even suggest it as a possible dupe even though I used the same URL and title.

https://youtu.be/NbzflQJo6pI

Come on everybody clap your hands
Ahhh you're looking good
I'm gonna sing my song and it won't take long
We gonna do the dupe and it goes like this

Come on let's dupe again like we did last summer
Yea, let's dupe again like we did last year
Do you remember when things were really hummin'
Yea, let's dupe again, dupin' time is here

Round 'n around 'n up 'n down we go again
Oh baby make me know you love me so again
Dupe again like we did last summer
Come on let's dupe again, like we did last year

Who's that, flyin' up there?
Is it a bird? no
Is it a plane? no
Is it the duper? yeah

Dupe again like we did last summer
Come on let's dupe again, like we did last year
Do you remember when things were really hummin'
Come on let's dupe again, dupe' time is here

Round 'n around 'n up 'n down we go again
Oh baby make me know you love me so again
Come on dupe again like we did last summer
Girl let's dupe again, like we did last year
Come on let's dupe again, dupin' time is here