Therefore, in my opinion, Kazuko Ioka will defeat Donnie Nietes in this boxing match
In terms of experience he has the edge, but if his age would be the reason for him to lose his stamina, I think he will not win in this fight.
Prime Nietes was a very fine technical fighter. When facing an aggressive and pressure fighter, he will be the matador. I think Nietes has decent power capable of knockouts but he prefers to stay safe and away from risk. I kind of disagree that Nietes is not accurate otherwise he would have lost a lot of his previous fights because he is not a volume puncher. You can't be a 4 division champion, a lineal, and a top 10 Ring pound for pound without great accuracy.
Let's not get misled by Ioka's 30 fights compared to Nietes' 44. Ioka once held the Japanese record with the fewest fights to become a world champion. Ioka became a world champion in only his 7th professional fight (correct me if I'm wrong but I think this was later broken by Inoue and then by Tanaka). I believe Ioka has more world title fight experience than Nietes.