Who do you think would win? If the fight were to take place at 118 lbs (Bantamweight) ? Daigo Higa is quite close to his prime, but Kazuto Ioka is slightly declining but still dangerous as ever.
I personally think the contrary... I think Daigo Higa's style is truly a weakness against the Kazuto Ioka's counter style. I think it would make for a fight similar to Ioka vs Kosei Tanaka.