I’m only halfway through the comics but so far the show is a really faithful adaptation but it’s not exactly the same. Certain events are shifted around and characters get a lot more development. But mostly it’s all very representative of what the comic did/was trying to do.

For example (no spoilers), Mark’s mission to mars doesn’t happen in the comics until after Omni-Man leaves earth. The plot with DA Sinclair and his Reanimen is spread out as a subplot across a lot of issues rather than one condensed story like in the season one episode. Most of the changes are stuff like that.