I always saw the PT fights as cotton candy. It looks good and tasty, but after too long my teeth hurt and I have a stomach ache. OT fights for me are like a fine perfectly cooked steak. Mmmmmm steak. It looks meaty, it tastes great, and I feel fulfilled.

Point being the PT fights were filled with needless flipping and for me lost all sense of the danger of it all. They just went at each other like they had wet noodles, with no thought that it may take off their heads in the madness. In the OT, they seemed fully aware that they were holding a lightning bolt, and carefully picked their swings. I always go back to the ESB duel. Giant Vader crashing down with one demolishing swing after another, and Luke barely holding onto his weapon every time. IT. LOOKED. DANGEROUS. The first time I saw it I was one the edge of my seat wondering when Luke's arms would give way and he would be done. And man was he broken by the end. It was just a level of realism that is completely lost in the prequels.