It's different and usually depends on how it's delivered.
Like consider a magician vs a medium. The magician tells you he is doing a trick, and watch close. Then he does a trick. The medium tells you he is magic and does magic. Then he does a trick. Magicians are cool, mediums are con artists.

A comedy movie is honest about being staged, but it's still funny because the situation is so clever/absurd/whatever.
A "just for laughs" style prank is usually not as funny as a scripted movie, but the magic comes from watching someone unaware they are being filmed and knowing that their perception of reality is being totally fucked with.
If you reveal that the "just for laughs" prankee was a paid actor, suddenly it loses all its shine and it's just a comedy sketch that isn't actually funny.

This sits in the middle. It's kind of a funny sketch, it's relatable and we've all been there. But it would be way funnier if it was unscripted and actually happened. It's weird to pretend that it wouldn't.