Lord Chaos is an abstract. As much as I idolize The Mad Titan, he has no hope of defeating an abstract on his own. I've never know Chaos to take a physical body anyways, only to show himself as a giant floating head.
And even if he could defeat Chaos, he wouldn't because then Eutopian Order would reign...and Thanos of Titan would never have that 😈
He probably loses but he might last longer than it may first appear, I can't be bothered to scan it but in Thanos' Quest he says:
"You see, I am one of those odd beings who is outside destiny's usual realm of influence. Choas and Order have no control over me, and so cannot detect my comings and goings".
With a little prep he might be able to use that to his advantage.