Thing is that Oni doesnt really want to do anything else, hes sorta just pumping girls every 6 months aslong as people keep supporting it, he doesnt have the coding skills or interest to do more, nor take an actual programmer (wich youve had people like Prime actually offering him to help him fix his code).
He made a sandbox X-men lewds simulator with funny interactions and reactions, but thats the thing he wants to make, TNH actually wants to make a X-men game WITH porn, you could take the porn out of TNH and it still would work if you add something like turn based combat, its much bigger in scope as intended.
They are different games, you cannot pretend they are the same just because TNH was inspired by RLE and you lewd X-babes in both.