Seems like they are equivalent in most cases, though "this" seems easier to type.

jQuery - this vs e.currentTarget.js

// 1, this
$('#selector').on('click',function(){
  $(this)...
  // do stuff with clicked element
})

// 2, e.currentTarget
$('#selector').on('click',function(e){
  $(e.currentTarget)....
  // do stuff with clicked element
})