IMO:
Dark > Wolf
Dark is stronger, faster & debatably smarter than Wolf in terms of general IQ. Plus he killed the Abomination outright & survived, and the Abomination is vastly stronger & more durable than the AVPR Predalien, of which Wolf stalemated with in close quarters combat. If he was at full stamina & had all his weapons when fighting the AVPR Predalien then yes I believe he would have defeated her without that much difficulty.
Wolf could defeat the Abomination with his intelligence, skill & superior weaponry, but he would need to deal a LOT of damage and utilise the same tactics as Dark if he wants to defeat the Abomination. The Abomination is miles stronger than Wolf & Dark, able to shake & crumble parts of the Pyramid with its strikes, and was also able to tank multiple fully charged Plasma Shots, the same shots of which make Xenomorph Warriors explode on impact. The Abomination was also able to Survive being submerged in lava multiple times and also SWIM through it, which should be physically impossible due to its density.
Wolf, being slower than Dark, would have a harder time evading the Abomination to give himself a chance to set up his defence, and because his AP isnāt as high as Darkās & his Plasma Caster/s arenāt as potent as Darkās, I doubt he would be able to win without his extra gear & weaponry such as Shurikens, Proximity mines, Power Punch Glove, Blue Vial, Razor Whip etc.
Overall my verdict would be:
Dark > Wolf >= Abomination > AVPR Predalien