Originally Posted by
Edmond Dantes
The difference between a port and a unique game is a matter of how much it affects the experience. If you can get basically the same experience from one that you could from the other, then its a port. If its substantially different, then its a new game.
The REmake is substantially different. As you yourself noted, it has new plot twists and new gameplay. NEW. GAMEPLAY. You can't say it has new gameplay and then say its just a port. That's a contradiction. You might as well refuse to acknowledge Rygar as an NES exclusive because there was an Arcade version, even though the two are nothing alike.