Not only are the jumps the most difficult I have seen in my 45 levels of Guild Wars 2 it is timed. By timed I mean fractions of a second can mean success or failure. After all of these futile attempts to see what is at the top of this tower my revelation was that Mario Brothers style jumping is a perishable skill. If we were able to roll back the the clock a couple of decades, slap a rectangular controller in my hand and tell me to get to the top I would have been able to complete it multiple times so far. Back when games like Mega Man, Battletoads and Ghosts 'n Goblins were what consumed my free time I would have looked at something like The Mad Kings' Clock Tower and scoffed.
MattVisual on YouTube has captured the essence of this place. Teach me Obi Wan.