Cosmo Kramer may be good at acting on the spur of the moment and coming up with plans but he’s not taking Katsura out. Katsura is probably even better at being absurd than Kramer is. Kramer just won’t be able to keep up with this guy’s nonsense which in the end will definitely put Cosmo on the losing side. Katsura can also actually fight and Cosmo cannot so that should be taken into account too. Katsura wins.