The Pillar Man are intelligent enough to the point they can understand complex machinery in seconds despite having slept for thousands of years, learn how to speak fluently in seconds in different languages, have a vast understanding of biology, are more than skilled enough to kill entire clans of those who have trained their entire lives with abilities meant to specifically kill the Pillar Men with little to no effort. Treat humans even after technological advancements as stupid and primitive. Kars has an IQ of 400, is considered a genius among Pillar Man, of which everything mentioned so far applied to a Pillar Man Kars considered nothing but a stupid dog, Pillar Man are the most intelligent beings on the planet by a large margin. The Pillar Man and even those less skiled innately know martial arts of differing forms despite no training, just because they can deduce what's optimal for the situation at hand and adapt a fighting style to fit it, overlapping with actual martial arts and kung fu (that isnt even a pillar man feat, that's a Caesar feat, which Josepf scales directly).
Although honestly? None of that really should matter, Joseph only needs one hit in to induce a wide selection of Hamon based effects, Batman despite all his skill cant exactly do anything abot that, he still would need to block Joseph's blows if in cqc and blocking is still contact with the hamon attack, whch is enough. Unless Batman has prep or prior knowledge on Hamon and what it can do, cqc then getting gimped by Hamon is a very likely possibility, and if anything, Batman's suit would likely pick up the hamon quite well given the metals that compose it.