You tell me, you're the who's saying there's something better out there.
The only thing I can think of is all NLT games put together.
It's your claim, I don't know your taste. If someone thinks that cheese sandwich is the best food in the world, then obviously that person is wrong but maybe that person doesn't know that pizza exists, or whatever, paella, or salmon with orange (orange salmon is said?).
But if we are talking about porn games in general, without knowing very well what you prefer, have you tried stuff like the Rick and morty one in this site, or Desert stalker, or Summertime saga... maybe Good girl gone bad, Netoria tactics, Hero party must fall, Bad manners, Lisa (the one from here, not the one on steam, that's a great game but from a different genre), once a porn a time, treasure of Nadia and its sequel, Eroico, Sanguine Rose,...
The only reasons for you to think so high about this game is that you must LOVE DC super heroines, and prefer quantity over quality and you know what? If that's the case I can totally understand. But then again you should be more realistic and say that this is your favorite game ever. But being the best implies some attempt of comparison with so many games that have better graphics, are better written, have better sex, and/or are just more fun to play.
If you want we can go to pm and I can try to make better suggestions about games you could like with your feedback, there are literally thousands of them that you could try and love if you think this one is the top of the world and I have the time to help you, I just started my holidays anyway.
EDIT: Oh, you do know Treasure of Nadia. I honestly think that's a way better game over this one in every way, except that you are not having sex with DC heroines...