Magneto and Havok, Cannonball Vs. Superman Captain Marvel and The Manhunter.
Here, objectivly. Havok would go first down and would probably die quickly. What he doesn't have is durabilty. Magneto may protect him with force field, but Magento would also have trouble with other, so he wouldn't be able to protect others for long. Havok would go quickly down.
Magneto and Cannonball stays. Magento could hurt Superman. But Cannonball can be hurt. He can be overloaded, he may take one powerful punch or more powerful punches, but he cannot take everything and those guy could take him down (and MM could do it easily with his mental powers). Only real threat is Magneto, but he doesn't have enough support to go against those guys.
DC wins.