WWH is integrated with a celestial bio-suit identical to Apocalyps own. In the process endowing him new abilites in addition to his own powers. With excellent mastery over the technology due to his genius level intellect, he faces off agaisnt the titan on earth in downtown NYC. After a brief exchange, WWH rises to extreme levels of rage. The 2 are now bloodlusted....who wins?
Still the same result, since Thanos has most of the same abilities surfer does (incredibly high energy attacks, ridiculous durability, teleportation) but with better tech- Thanos has shields that can stand up to planet busting punches with ease.
This would likely end up the same way as one of the thanos vs. champion fights- Thanos BFR's WWH somewhere where he won't bother him, then goes about his business.
honestly- apocalypse's tech isn't all that impressive to someone on thanos' level. Thanos is familiar with celestial and galactus' tech.