The 90's were a wild time for gaming. Many console manufacturer's did not view computers as competition so 3rd party developers were free to port to varoius computer platforms as they saw fit.

Electronic Arts coming from computers, more than likely did port at least one of the Road Rash games to PC. I am not sure which one it was though.

The new password system is indeed a big deal. Most don't remember weapons and such, just your level in the game.