What's the difference to the browser between "tripleclicking" the button and "clicking the button >X times in one second"? ie: why did it respond that I "click

What's the difference to the browser between "tripleclicking" the button and "clicking the button >X times in one second"? ie: why did it respond that I "clicked the button seven times within one second" before it responded that I "tripleclicked the button for the first time"? See this screenshot for reference: http://imgur.com/xhWHPQa http://imgur.com/xhWHPQa