The difference is, the referee gives the penalty and VAR doesn't over turn it, meaning MU are not OUT of the FA Cup.
Referee and linesman GIVES the TORP goal but gets overruled as offside by VAR, meaning MU would have been OUT of the FA Cup.
Looking back at the highlights, forgotten how many chances Cyrille Regis had that day, should've had a hat trick, he absolutely terrified the Leeds defenders. RIP big Cyrille.