No, it takes much longer. Also it is nonstop grinding, unlike non-grindy games where most of your time is spent reading dialog with a handful of choices here and there. (not saying all games are non grindy. in fact most are. RPGM games are notoriously a combo of grind and walking simulator. Where its 90% walking an empty map, 9% combat grind, and 1% actual content).
For example, spanking a girl gives +2 domination. Out of 1000). And it is capped to only give you this a couple times per sex scenes. once the limit is reached (IIRC 10 domination) in that sex scene you have to wait until the next one to get any.
... actually massage is great because you can do "skip" and instantly automatically get all the rewards at once. For the new girls I should probably just massage them into maxed stats instead of doing any sex