Earlier quoted context omitted.
They call the MacBook Pro Force Touch and the iPhone 6S 3D Touch. I have a MacBook Pro with Force Touch and honestly haven't used it much yet. I think it's for the same reason as another poster says. I'm not sure where it's available and what it will do? In safari it previews links and gives definitions. The preview links thing is a bit redundant because clicking a link and swiping back is just as fast.
You've her clicked a link on your Mac? A normal click on activates the force touch to give the illusion of a "click"
I meant the second "click", but yeah you're right. I do use the new trackpad and it's awesome.