Why isn't Orion in this fight?^^
Anyway:
Super Strength: The Martian's superhuman strength comes from his plasmorphic structure formed from immensely long and complex molecular chains, augmented with his psionic and telekinetic abilities allowing him to lift incredible weights without these weights crumbling under the stress. The Martian has been seen lifting small tankers out of the ocean for short distances. By modifing the density of these bio-polymers, the Manhunter can make himself stronger by forcing the polymers into tighter bundles. At a rest state, the Manhunter can lift approximately 20 tons. Given a few minutes to reconfigure, he could match Superman pound for pound for about a minute. Then the bio-polymer would begin to suffer under the strain and begin to unravel. While the Manhunter's strength can be on par with Superman and he lacks the long term endurance and stamina of the Kryptonian. This probably has to do with the Kryptonian's storage and creation of MetaATP which the Martian biology would not have developed being so far from the Earth's sun.
Limited Invulnerability: The Manhunter's invulnerability is no where near what Superman's is, as proven by the battle against Doomsday. Doomsday, defeated the entire Justice League with a single blow for each member. Overall, the bio-morphic structure of the Manhunter's body allows him to absorb most kinetic energies such as bullets, shrapnel or flying debris. Attacks of a nature greater than that, he can harden his bio-polymers by rebinding them and become nearly 10 times as resistant to damage as steel. Hazardous environments effect the Manhunter less than normal humans and he seems to recover from them much more quickly. He has proven to be immune to most human diseases, but no experimentation has been done to see what more advance viruses such as ebola or anthrax might have.
Martian Vision: The actual nature of this power seems to vary depending on the reports. It has been seen to be a bolt of force, directed by the Manhunter's eyes causing considerable damage, equivalent to 50-100 lbs of TNT. It has also been seen to cause flammable objects to catch fire. The range of this power is also unknown but has been seen to be effective at ranges of 500 feet or more. Judging from the infrequency of use, it must have a high energy cost or reduce the Martian's effectiveness in some way.