by the end of the pacific war the n1k2 george was the best the ijn had inservice (alltho saburo saki is reported to have not liked it ).
and the ki100 or ki84 were the best the army had .
if the war had lasted 6 months longer there were some fairly promising aircraft coming on line like the a7m2 reppu ,j7w1shinden ,ki83 and others that might have made problems for the allies over japan but not changed the final out come