@supermanwithatan01: Sorry never got a notification. Thanos was not more powerful than the first Magus or Infinity War Magus. By ABC logic, Avatar of Death Thanos would be more powerful than the Thanos Imperative Magus since Mar-Vell beat him easily and Thanos beat Mar-Vell easily.
@supermanwithatan01: To be fair, Thanos was the avatar of Death at the time and Lord Mar-Vell was the leader of the Cancerverse, who was attempting to kill Death. Only Thanos had the power to kill anything in the Cancerverse.