What makes Ken "Okarun" Takakura different from the other guys for Momo?

I mean... I've seen some threads in the community that try to justify why Momo loves Ken, but all the qualities attributed to him as an answer are also valid for Zuma or Jiji, they are kind, gentle, strong and are willing to fight to protect Ayase, they could even argue that they have an aesthetic and physical advantage over Ken and Jiji in particular has the advantage of having known her longer. Although I have some theories about it, I'm curious to know what your thoughts are on it.