I'm not arguing, I'm just saying I don't understand the implications of all that, and it doesn't really seem to matter because by the end, the only concrete thing that changed is that Ranma's mother knows about his secret and accepts it.
I know Akane is the one true fiancee, that's sadly undisputable when the final shot of her and Ranma walking together at the end is seen. But after reading the later volumes, there's this new girl, Akari Unryu, who's totally in love with Ryoga and loves pigs and even finds out that Ryoga is P-Chan and loves that too. So that still leaves a gap there, if the pairings were:
Ranma/Akane
Shampoo/Mousse
Kuno/Nabiki (come on, a greedy bitch and the richest brat in Japan? How could they NOT fit together?)
Ukyo/Ryoga
With Akari around, that makes it seem more like Ryoga/Akari so Ukyo still needs someone. And she fits with Ranma so much better than Akane, that really bites. So I'm glad that at the end, there is no resolution so I can still imagine legitimately that everyone ends up with the person who's right for them.