AP
Doomguy seems to win here via better calc. If scaling's your thing he can beat dudes to death who can tank BFG shots, though it takes a while, so he can scale off a better feat.
Abilities
Raven's best thing seems to be
Ice Manipulation, though iirc RWBY doesn't treat ice properly and has freezing not kill people so maybe not, and Doomguy's besides the BFG being a huge AOE would be
Invisibility and
Invulnerability. Raven seems more versatile overall since we don't let all of Doomguy's guns be the same tier, but invis and invuln seem more beneficial than her having several forms of AP.
Speed
It's equal.
Lifting Strength
Seemingly Doomguy, via the note of "possibly higher". Lost Souls are the spine rip calc, iirc.
Striking Strength
See AP.
Durability
Doomguy, via both a better calc and invulnerability.
Stamina
I doubt that this will end up mattering and Raven's page has no elaboration on this.
Range
Doomguy seems to take this since Raven has no maiden powers while he still has a gun. The BFG's AOE is pretty huge as well.
Intelligence/Skill
This one I'm gonna have to give to Doomguy. Raven's feats aren't unimpressive, and yes I'm aware that this iteration doesn't have 600 gorillion years of experience, but hear me out. A lot of the stuff Raven's profile makes a big deal about is not relevant, as it pertains to her mastering her tier 7 powers which she isn't gonna use here. Doomguy was already a soldier for a long period of time pre demonic invasions, and put an end to several of them alone. To defeat armies alone like that seems to be superior to what's on Raven's page.
This is compounded further by the issue of his durability. It's tier 9. Many, many demons were capable of ending Doomguy's crusade if they got a single good hit on him, but none ever managed to. Despite being severely outmatched physically, with only a select few of his weapons even touching the heavy hitters, he still took on an army and won alone, multiple times. Amping to 8-B doesn't suddenly remove his skill, and nothing Raven has on her file indicates that she's even likely to get a hit in.
Voting Doomguy.