Honestly, looking at the system and stat records, MC probably will be able to fuck them a lot more often this time around. We just won't get actual scenes/CGs for it. In the last 2 images, it basically goes "Huh? I thought I was doing well capturing her, but this guy has considerably more hearts than me!" then "Oh, that's it! He's been fucking her a lot unbeknownst to me and each time she had sex with him was great!"
Which seems to imply that there will be that thing from Leane 2 where there aren't scenes with dialogue and CGs every time they fuck. Instead, it was just a still shot of the harem with King and the girl he's fucking gone and we hear her moaning somewhere off-screen. I expect that as long as we're alone in a room with them and they're sufficiently horny/affectionate with MC or another guy, they'll fuck every time. There just won't be an actual scene every time. I doubt harem route/end will be a thing, though.
Also, that "Great!" part refers to the hearts on the bottom of each..... Sex Card? I'll call them Sex Cards. Basically, the girl rates how good the sex was with how many hearts she gives the sex on the Sex Card. The Sex Card also lists all the specific acts/positions that were done. Like Blowjob, Doggy, Cunnilingus, Paizuri, Missionary, French Kiss, etc. The Sex Cards also list on what day the sex that Sex Card is referring to happened in the upper-left.
This might imply its even possible to have no idea the girl you are pursuing has been getting hammered by another guy for weeks until you look at their status menus?