Getting arcade ports to home computers right has always been hard. The hardware is usually fundamentally different and conventions are as well. The more customized the arcade machine is, the harder the port. The original Street Fighter II Amiga port had been widely critisized for lack of speed (and controls with a standard joystick, of course). At least, it had retained the large sprites, however.
Super Street Fighter II, as it is commonly known, is the same game all over again, with a couple of completely new fighters added to the mix and and original bosses having become playable characters. It originally used a widescreen aspect ratio. Which, surprisingly enough has been retained in the Amiga port. Which comes at the expense of the screen estate which is actually used being tiny: large black bars grace the top and bottom of the screen. Which implicitly makes the sprites quite small as well.
So maybe this was done to address the common criticism and indeed, the action is somewhat more fluid than in the first port. Favouring playability over presentation, what's not to appreciate? Indeed; if it were like this.
As far as scaling down controls using many buttons to few, Super Street Fighter II goes a different way than previously established. Instead of overloading joystick directional movement and button pressing to trigger all moves, it uses the shift key on the keyboard to switch between kicks and punches. Which means when playing with a regular joystick, you need to have your left hand on the keyboard the whole time and can only use the right one for actual control. Newsflash: joysticks are usually unusable one-handed. What could still work would be simply sacrificing half of the moves and decide to go for either kicks or punches – if the kick/punch mode didn't switch around at random! In summary, without a two-button joystick, this game is unplayable.
It is only appropriate that sound is a total joke. Hardly anything can be heard at all, and if it is, you will wish that it went away again. Playing from floppies is also only possible in theory, as switching and loading times get totally out of hand. Graphics aren't just small, but don't even use the available colours and backgrounds lost their animations. Sorry, this is a really shoddy port of an originally good game!