Suggested by Destroyer Oolong has never been a very powerful character. The only transformation that he has which is worth anything is his robot mode and even then the guy ran away so quickly that we didn’t get to see what it could do. Oolong would ultimately be crushed by Jirass here and hasn’t proven that he could stand up to a true Kaiju. At least he hasn’t been able to prove that so far. Jirass wins.