Lessee...
1) First shot is darker
2) tickler has a more rounded ass in the second shot
3) there's a collar and chain hooked to it that runs off both ends of the picture in the second shot
4) Her head's further back in the second shot
5) There are chains (hanging unused?) hooked to frame and...
Her nipples are longer in the second shot. Presumably she's enjoying the torture, since she sure doesn't look to be chilled. :)
And I'll cheerfully cop to being a perv for noticing.
Not all of them. Unless there's a new TLD ".comview_video" this is a bad link: https://www.pornhub.comview_video.php/?viewkey=ph5eb508b7c21da
Try https://www.pornhub.com/view_video.php/?viewkey=ph5eb508b7c21da