The games included in Anthology haven’t been messed with in any way. So we’re talking about 2D sprite-based graphics that are often over ten years old. The strength of the original art still shows its power as the games’ visuals are still very appealing. Each game also features an increasingly large assortment of stage backgrounds, usually one or more for each character. With character counts nearing the 30's in Alpha 3, this means there are far more stage backgrounds than most contemporary fighters, either 2D or 3D, can boast. The art isn’t as good as say, Marvel vs. Capcom 2, but still holds its own.
The audio is classic Street Fighter fare. All the crazy voice acting and battle screams are there. With each stage sporting its own theme, there’s plenty of variety in the music as well. Ken’s stages have always been my personal favorite.