This entails that he possesses vast superhuman strength; the upward limit of this is unknown, but it must far surpass the threshold of what Marvel calls the "Class 100" Level, easily exceeding 100 tons. For example, Count Nefaria has gone toe-to-toe with a hammer-wielding Thor and lifted a submarine into the air
going toe to toe with thor doesnt put him on par with doomsday it puts him below doomsday doomsday had taken out an army of GL's killed an energy being, beat waverider and a being as powerful as superman but with power from the mother box, also he is immune to the level of telephathy manchester black and dish out which is pretty big time telepathy riveling that of the MM.
Avengers #165- Nefaria smacks Captain America and Black Panther. Beast leaps at Nefaria furious over his role in Thunderbird's death. Nefaria swats Beast down and insults mutants. Scarlet Witch tries using her hex to hurl a stone missile at Nefaria. Nefaria blasts the missile with eye blasts. He keeps the blasts on and when he overpowers Scarlet Witch she will feel the eye blasts. Yellowjacket stops him by blasting him in the face inches away from him. Nefaria grabs Yellowjacket out of the air. Wonder Man comes to fight. Wonder Man knocks Nefaria over, but Nefaria gets up ready this time. Wonder Man hits Nefaria again to no effect. Nefaria hits Wonder Man through the wall of Avengers mansion. Cap and Beast hurl Cap's shield together. Nefaria snatches it out of the air. He tries to crush it, but wonders about his power when he can't. Nefaria slings it and hits Panther. Nefaria picks up a forty-story building and crushes the Avengers with it. Nefaria walks to a bank. He recalls how at first he didn't want to wear his new costume, but had to in order to conduct the energy from Sturdy's machine. But now he enjoys the costume and feels it is "properly dramatic". Nefaria rips off the door to a bank vault. He plows through the wall. Nefaria sees an attractive woman with a guy. He pushes the guy down and leaps away with the woman. He tells the girl that he now possesses the power of Power Man, Whirlwind, and Living Laser a hundred fold. Whizzer runs around Nefaria. Nefaria knocks Whizzer over. Whizzer tells Nefaria that for all his power he is old and will die soon. Nefaria leaves him alive because he has given him a purpose…immortality. Sturdy emerges from the wreckage of Nefaria's house. Iron Man digs out the Avengers. Wonder Man was holding the building up, but was afraid to move it. Nefaria returns looking for Thor. Iron Man attacks, but is eye blasted back. Nefaria knocks off Beast and Panther. Scarlet Witch tries to knock a building onto Nefaria, but he uses his speed to hit her, Yellowjacket, and Captain America in the blink of an eye. Iron Man smashes Nefaria with a boulder. Iron Man boosts his strength with power and tries to take Nefaria down. His power fades and Nefaria knocks him away. Nefaria knocks Wonder Man into Captain America and Yellowjacket. Thor arrives
Avengers #166-Thor throws his hammer at Nefaria. Nefaria is hurt. Thor flies down and punches Nefaria. Nefaria gains confidence because he has taken Thor's best. He tries an eyeblast, but Thor deflects it with his hammer. Thor tries to suck Nefaria into a warp, but Nefaria covers it by throwing a building on it. Thor is impressed. He summons the lightning to strike with him. Thor goes to strike Nefaria with his hammer. Nefaria stops Thor's hammer with his hand. Nefaria knocks Thor over. As Nefaria goes for Thor's hammer Vision confronts Nefaria. Vision tries to phase through Nefaria, but cannot because of the excessive energy within him. Nefaria strikes the intangible Vision. As Thor knocks away a bus Nefaria had thrown Professor Sturdy finds Nefaria. Sturdy reveals that Nefaria is aging at an extremely accelerated rate. He could have controlled it, but as he tells Nefaria he dies from the wounds Nefaria inflicted. Nefaria will be dead in two days. Thor offers help, but Nefaria strikes him and flees. Cap gives Wonder Man his shield and a smaller contingent goes after Nefaria. Vision knocks Nefaria out of the sky. Wonder Man hits him, and blocks his eyeblasts with Cap's shield. Iron Man blasts him, and Thor strikes him with his hammer. Scarlet Witch unleashes her hex on Nefaria, and Thor punches Nefaria. Nefaria staggers up, but is finally knocked out as a diamond hard Vision dive-bombs on him. Yellowjacket talked to Sturdy before he died. He learned how to return Nefaria to normal. Sturdy too had been lying about Nefaria dying. The super energy would have allowed Nefaria to live forever.
i dont think his lasers are hotter then supermans heat vision doomsday withstood that with out even trying and i dont think he's as strong as doomsday either since doomsday is stronger then superman, and his energy powers are not as great as those of a green lantern im sure so he wouldnt be able to do much to doomsday.