Icl, Boros is kinda overrated on the OPM sub lmao
On a thread about who has better regen, an overwhelming majority said Boros, while I agree anime Boros has better regen, there were people arguing manga Boros has better regen since he was "blown to millions of prices", there were even people who used the fact that Boros got hit by Saitama as a reason why his regen is better rather than the damage sustained
. I'll just copy and paste my comment to explain my view on it
Anime Boros (blood and an eye) > Zombieman
Zombieman > manga Boros
People overrate how much Boros got destroyed by consecutive normal punches this is something Zombieman can easily regenerate from,
this is Zombieman's limit, clearly alot worse than what happened to Boros. Without getting into speculative territory we can only estimate that Boros' limit is around the level of damage he sustained from consecutive normal punches since there is no scene of him taking worse damage or a statement saying that the attack was nothing to him, mincemeat is levels beyond that so Zombieman wins.
Boros can regenerate wayyyyy faster than Zombieman though so in a fight his regen is better.