Samurai Showdown Warriors Rage on PS1 isn't a port of the Hyper NeoGeo games. In japan the PS1 game was called Warriors Rage 2 (set after the events in warriors rage Hyper 64), but in the translation to america the '2' was dropped.
Fatal Fury: WA is the ONLY hyper 64 port, and a fairly average one at that, but the gameplay translates well. If your thinking of investing in a Hyper64 it will give you an idea how SNK turned a 2D fighter into a 3D one with a good degree of success.