The prequels with their overaction and excessive coreography with lightsaber duels really did too bad to the OT and make those who watched the original movies after watch the prequels wonder why they fight "so badly" in the old movies. Same with the Vader's scene in Rogue One.
In the fan video, Vader looks stronger than Obi-Wan and really won the duel, while in the original movie, Obi-Wan simply let himself be destroyed.
And why Vader simply doesn't kick that door???