We're talking about Fatal Fury Special, the third game in the series. Fatal Fury 1 wasn't even made for PCE.
The SFC/SNES version of FFS is fine. It's letterboxed, like almost all 16-bit home ports were, and the sound is really "SNES"; so if you hate that muffled reverb, stay away. IMO it's substantially better than the Sega CD version, which suffered from severally cut animation.
As for the SNES not being a good system for fighters...excluding the Neo Geo, what was better? It was the best system for fighters for some time. The Genesis was by far the worst fighter system of the 16-bit years. The PCE was a fun distraction since it had the original home games like Flash Hiders, Advanced VG, and Asuka. It also had the best Neo Ports, but only for about a year. After that SNK stopped porting to concentrate on promoting the Neo CD, which didn't work, and by then everything was on Saturn.
The SNES had the most up to date home versions of Street Fighter II...except for when SFII' was released on PCE, which became irrelevant once SFII' Turbo came out a month later for 2,800 yen less. It also had Fighter History (two of them), Gundam Wing: Endless Dual, Turtles Tourniment Fighters, the Ranma games (one of the three was actually good) more Neo ports than the other systems, and a bunch of fanboy shite ranging from Mortal Combat to Pretty Fighter.