I just picked up all of these on the cheap. SS1 is classic but AOF2 is a pure beast, damn near impossible and must be mastered to beat.
Well most characters like Ryo and Robert, just triangle jump kick and hard kick sweep. You can't straight up fight the computer, you have to use the cheapness patterns (even on 1 out of 8 challenge, lol). Kinda f*cking ruins any casual enjoying of the game 1 player-wise, which is a damn shame.
This is why I just use the Unibios cheats to get an upper hand. Like infinite spirit meter for moves. This is one of the few games I make the exception of using cheats.