IIRC Warrior's Rage PS1 was just a slightly extended version of Samurai Shodown 64 2 (like Fatal Fury: Wild Ambition PS1). I had fun farting around with them a little bit, but I lost interest in them fairly quickly and wound up going back to other fighting games (like KoF97 & 98).

The one fighting game on HG64 hardware that saves it from being a total loss is Buriki One, and the emulation on it is still incomplete. I've got my hopes up that someone will eventually make a stand alone, dedicated HG64 emulator just so I can play Buriki One at full speed. I'm still kicking myself for not buying the kit for $50 when I had the chance (game + motherboard). Now THAT game fucking rocked.