This was pretty good. The animation was pretty decent-- not quite as high-octane as some of the sprite fights I've seen, but well above average. Sound effects were well executed, and fit perfectly with the action.
And for the record; Mark Hamil Joker is best Joker!
However, I would have preferred seeing the fight between the two of them before the Joker delivered "The Killing Joke" (comic book references!) on his opponent. That is to say, it's a tad too short, and it makes Akuma look like a complete wuss-- because, let's face it here, the Joker's no Kung fu master. Surprisingly capable at fisticuffs? Sure, but certainly not on-par with a "memetic badass" who uses the Satsui No Hadou (that's Akuma's fighting style, if you didn't know). Not only that, but Joker didn't even get to use any of his signature weapons-- like the joy buzzer, or a crowbar.
I see that questioning look on your face.
Yes, really. A regular old crowbar is considered to be one of his signature weapons. He used a crowbar to kill Robin in the comics--
And I'm gonna stop ranting now...
Other than that, I have no complaints.