I like both Joker and Hacken. As for this song, of coz I like Joker’s version more, however, I think that each singer has their own style and that is what special about them.
Even though I'm a decades-old fan of Hacken Lee, I really do appreciate you doing this video on his singing 瑕疵. I agree with all of your points, and I think you explained a lot of the problems really clearly, and concisely. Despite all those hardly noticeable issues, it is very commendable that at his age he is willing to put himself out there, to compete with a lot of mainland singers who have had a lot more vocal training than he ever got. Respect!