1) gameplay as in ero-gameplay you dingus... this shitty copy is just a scene hunter, while scars actually tries to put you in a position of suspense with: the phone and the bulletin board, and also the randomness of who can get the main heroine (if you trigger them all) so it's not as linear as this shit is.
2)having a good ending in NTR games is what makes the heroine's fall worth it. sure, scars's isn't the best at representing this argument, but take for example Oyako Rankan, the NTR masterpiece. where the player can actually prevent 99% of the dicking while still having multiple sex scenes of his own. most ntr games these days lean hard on the impotent cuck MC, which becomes stale VERY fast, while having a driven protagonist like in Oyako makes the ntr feel MORE REAL/BREAKING when you fail (or if you choose to fail).
3)if we talking bout GOAT of rpgmaker games karryn has no competition