At this point: who care. But obviously the media will have a field day and pay attention to it while ignoring the Trump administration handing over classified information to the Kremlin or taking away people's healthcare. Evangelicals will be mad but forgive him when he defunds Planned Parenthood.
Sounds about right
His supporters would say that it was a lookalike in the video, or that he was spliced in somehow.
Actually, I could easily see Trump insisting that it is him in the video due to the extent that his egomaniacal delusions warp his perception of reality. I wouldn't be surprised if he tweeted something along the lines of "FAKE NEWS still panicking over my HISTORIC win, stoops to releasing sex tape of me which I hear already has record-breaking # of views. DISHONEST MEDIA won't report that woman was VERY satisfied and won't talk about HUGE job growth. Sad."