Kira Vs Jhin is a better MU than Kira Vs Adachi because it works better as a 1 on 1 fight, the only problem is that DB will likely Give League Of Legends Item powers to Jhin and that's retarded
(To give you some perspective: In Jinx Vs Harley Quinn They gave Jinx the Phantom dancer item passive that allows you to move through units... And by the time said episode aired Phantom Dancer fell out of the meta, and got reworked into a Bruiser item that No ADC would ever build)